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Published on April 28, 2008 by

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Don't be confused by Significant Figures! It will JUST MAKE SENSE with this video! An introduction to significant figures. Discusses how to round for multiplication and division using significant digits.

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• Dude you made this really simple thank you very much! ๐

• thnx 4 the help

• Wonderful service you did for students. Much love!

• i understand your question, but 1,600 only has two significant figures, so you don’t have to worry. zeroes at the end of a number without any decimal places (like the two zeros in 1,600) don’t count as significant figures. you correctly said that the answer could be reported as 1.6 x 10^3, and that’s just a different way of writing 1,600. you should watch my video about zeros if you’re confused about which zeroes are significant and which aren’t.

• How would you turn 895.23 into 2 significant figures?

• that is a very picky way of doing significant figures, and–honestly–pretty much no one does it that way. in these videos, i say round up if you have a 5, so 3.385 always becomes 3.39. that’s what like 99% of people do. i’m sorry if your teacher wants you to do it the complicated way!

• it’s always the lowest number. so there’s 3 sig figs in 231, and 2 sig figs in 24, right? so you’ll round your answer to 2 sig figs. when i divide 231 by 24, i get 9.625, so i’ll round that to 2 sig figs, and it will be 9.6

make sense?

• i do the same number of digits first because it’s easier. if you have questions about multiple digits, watch the next video, significant figures 1.2

• thank YOU so much! i love to hear that my videos are helpful. good luck in chemistry!

my chem teacher is so bad at teaching.

• Thanks alot dude. Helped ALOT!! i had no idea what was going on in chem class but know that’s changed!

• nice of you to try to help people with this

• 5:09 hahaha multiplecation.

• omg thank you soooo much ^_^ very helpful!

• she said that because she’s super picky. the idea is that 5 is right in the middle so if you round the number so it’s even, sometimes you’ll go up and sometimes you’ll keep it the same. statistically-speaking, it doesn’t make sense and it’s not really a sound argument, but if it keeps your teacher happy, you should probably do it.

• Thank you very very much, the teacher didn’t have alot of time left to fully got through this with us ๐

however, what happens if you have

NNN.NN X NN.N?

• okl, just got to the end of the vid ๐

• yes, that’s right, because there’s only ONE significant figure in 6, so the answer should only have one as well. you could write it as “40”, or if you want to use scientific notation, you can also write it as 4 x 10^1.

• @Untravaersil
If you have an area that looks roughly like a square and the sides measure roughly 6 ft each, then yes, the answer is 40 sq.ft.
However, notice the emphasis on “measurement” and “roughly”.
If instead you measured the sides with a higher accuracy of 6 ft 0 in each, then the correct answer is 36 ft.
If you didn’t measure at all and 6 times 6 are exact integers (as you’re doing a problem in math class), the correct answer is 36.

• This is pure genious, Best revision EVER

• @tdewitt451 What if it was something like:

67 X 8 = ???
There’s 2 digits on one side and only 1 digit on the other

• Ohhhhhhhhhhhhhhh. I get it finally. Lol. I have two bad teachers. Lol. Thanks Man. I finally got it. Lol and haha. ๐

• how many significant figures is this? 40,000? 5? or 2?

• @swiitiichiil do you mean that 1.50 is what your calculator gives you, or 1.50 is what you want to round to? if it’s the calculator, it might have to do with what kind you’re using; i’m using a TI-83, which spits out many numbers after the decimal. if, on the other hand, 1.50 is the number you want as your final answer, that’s not right, because the zero at the end counts as a significant figure (watch my video on zeros), and you can’t have three significant figures in the final answer.

• Thank you!

• You saved me from Chem Honors my teacher can’t teach for crap. I wish you were my teacher rofl. Thanks!

• That’s a repeating decimal. Just saying

• Great!!! it helped a lot,

• This helped a lot man, damn my chemistry teacher is soo damn horrible at his job, I don’t think anyone in the class even understand what the fuck he was talking about.

• Thank God for this video, I have a test on this tomorrow

• @tdewitt451 i thought 6 and 6 were counting numbers and not meausrements therefore it has infanate sig figs and its 36

• @josh3367 good question. just because it’s 6 doesn’t mean it’s a “counting” number. if it’s 6 apples, then it’s a counting number (infinite sig figs). if it’s 6 feet, it’s a measurement with one sig fig. 6 people, counting; 6 pounds, measurement. make sense? here, i just want to show the basics, so i’m doing sig fig rules with all numbers–i’m essentially assuming that they’re all measurements.

• Hahahahaha i love u guy in the yellow thnxs so much!

• are the rules the same for adding and subtracting?

• @aznxboy1228 watching videos on significant figures on christmas eve? i’d think you were a pre-med at MIT.

• @tdewitt451 aw! why would you ever accuse me of being one?

• thank you so much this video is a life saver my teacher cant teach for anything making this look so complicated then after watching this u make it look easy n i finaly get this thanks again ^w^

• I swear, this will f*ck me up in Calculus.

• @swiitiichiil its the sme dont add zeros

• thank you so much this is a perfect tutorial.

• lol, if you are smart you figured it is easy,lol

• 7.09 how do u knw 1 and 5 is gonna stay :s his is what I need help :d

• why you chose all numbers that have the same number of digits.so you did all special cases.what if we divide 3 digit num by 2 digit num?

• Love you dude (no homo)

• what about 45/456? is it to 2 or 3 sig fig?

• hi mate thanx for this useful piece of information , BUT I THINK there is sth wrong if u go through (56×28)again … , UR ANSWER was 1.600 which has 4 significant figs and u needed only 2 of them .. i do not know if i’m right but any ways watch from 5:15 thanx

• @flashing511 here are a few things that may help. 1,600 has only two significant figures (watch my “significant figures and zero” video for more info on that). but remember that i’m from the US, where 1,600 means one thousand six hundred. in much of the rest of the world, 1,600 means something a little less than 2: one and six tenths. in the US, we’d write that number as 1.600, and 1.600 would have four significant figures. does that make sense?

• @tdewitt451 thanx yes ,,,it does . sorry for interrupting ๐

• god im really slow in significant figures

• @TFrench009 you’re doing a subtracting problem. you want to watch my video “addition and subtraction with significant figures.” that will tell you the answer you need.

• Man…. chemistry is so hard my teacher is really bad at explaining things. but thats america for you

• omg I freaken love you..I now understand this because of you!!! THANK YOU SO MUCH!!!!!!!!!!!!!

• So…….. sig. fig. are used to keep teachers from being asked, “What value do we round to???”

• Dude thank you Sooo much !! U saved my ass !!!

• @bennemann you’re exactly right! the whole POINT of significant figures is to DECREASE the precision of your result, because it was too precise to begin. if both numbers you multiply together have two digits of precision, your final answer can’t have more than two digits of precision.

• @tdewitt451 how would you round off if the number is not exact, for instance converting Mount Everest to meters from feet to the correct number of SF
29028ft = 8847.73m ?

• Oh, now I get it. :0

• AAAAAh I have a TEST tomorrow.

• @TheIkitta if that already makes sense to you, go for it. i talk more about that approach in my video “scientific notation and significant zeros (1.8).”

• professor john mayer

• @aznxboy1228 no. watch my video “add and subtract with significant figures (1.6)”

• You taught me more in 7 minutes than my teacher could in a whole class.

• @TheIkitta: Yes it’s right

• omg u should become a teacher this help me so much

• Why did you add the zeros after the multiplication and not the division?

• @hupper12345 2 — it’s always the lowest

• 1600 is 4 s.f., since zeros only don’t count infront of the others, like 0.5 (1s.f.)
1600 in 2s.f. should be 1.6×10^3, as Thelkitta said.

• Thanks!

• Yay

• MUCH BETTER THAN MY MATHS TEACHER

• wow you made it so much simpler than my chem teacher :b thank you so much!!!!!

• @Allison0776 yes! watch my next video, significant figures 1.2. i have a whole series of sig fig videos, you can watch them in order and everything should make sense!

• @hupper12345 watch the next video, significant figures 1.2

• very helpful ! thank you.

• but accoring to my book 3.385 will be round into 3.38 i.e if the digit is Even before 5 then that even number will remain unchange, i.e 3.38 And if the digit is odd before 5 then it will be round into its next even number.

• Thank for the lesson

• thanks this definitely helped

• YOU ARE AMAZING! ๐

• Thanks, that was very helpful! Although I have to ask, did you upload a second part to this?

• i’m glad it was helpful! i certainly do have a second part. it’s called significant figures made easy (1.2). i also have tons of other videos on significant figures: you can find them all by searching my youtube channel, tdewitt451

• I’m learning this in maths, not chemistry or physics…

• Very helpful and straight-forward approach. Can’t be explained any better!

• you are good at explaining things.

• this is really helpful, right now i’m supposed to be in college but I can’t afford it, so I’m studying back to take a test so I can get into a University,

• THANK YOU VERY MUCH! It has took me weeks of confusion, everyone explained it too complicated. but you helped me so much! A weight of my mind for my exam tomorrow <3 Thanks again you beautiful man!

• ty

• Does zero (0) itself has significant figure ?

• thanks for this tutorial thank you so much! this helps me a lot =)

• Thank you mister! You made it easier. :))

• A neat thing they tought us in school was, ‘1,2,3,4 were going to stay on the flore 5678 were elevate.’ ( means go up to but yeah)

• bro i fell asleep in physics. Thanks a lot!

• OMG i love u!

• And if the numbers have different amount of integers like 568364 divided by 436?

• then watch the next part of this video, significant figures made easy (1.2). and then from there, you can watch the videos on significant figures and zero (1.3, 1.4, and 1.5), and then adding and subtracting significant figures (1.6). good luck!

• DUDE U ARE AWESOME YOU SAVED MY ASS MAN, I HATED THIS NUMBRES BUT NOW THEY ARE EASY!!!!! TY

• thanks you

• omg. thank you! so much. :)) <3

• We’re all here because our teachers’ suck

• THANK YOU<3

• thank you ๐

• thank you so much the way my teacher teaches has something to do with the atlantic and pacific oceans and its just like wtf are you teaching but now i feel like i can pass the test tomorrow and prove that she devil wrong THANK YOUUU!!!!!

• i love it when you circle the answer

• Love you.

• we just have 3 weeks into school and my chemistry teacher makes this sound like is a different language but thanks to you now i get ๐

• My teacher should be fire

• thank you so much, my teacher actually showed this to me in class but the wifi made the video buffer and shit so i decide to use mine,now it is easier thanks to you ๐
good thing too, i have some of this in my chemistry test tommorow.

• not all of us, my teacher showed this to me. ๐

• Everyone in my class understand this, yet no one understands the concept of decimal places, apart from me.
I hate being the odd one.

• you help me do my math work properly tkx!!!!!!

• so what if you have to find the number of sig figs on scientific notation??

• then you should watch my video called “scientific notation and significant figures”

• that was exactly what i was looking for!!! thanks!!

• i learned that for a number with 2 significant figures, eg ur example 56 x28 = 1,568.. then we should use scientific notation instead of just filling them in like zeros. such as 1.6 x 10^3 instead of 1600, is that correct? should we use scientific notation instead of just filling them in with zeros?

• that is a very good questions, but the answer is very complicated. i talk about this in my video called “scientific notation and significant zeros (1.8).”

• Thanks for sharing!

• yes that is correct

• my teacher was weird about the way he put it. it was confusing

• you draw really nice circles. =]

• yeah, i intentionally left that rule out because i hate it, and it’s mathematically incorrect. i know that some teachers๏ปฟ like to use it, but it was designed for accounting (like rounding numbers in a bank account), NOT for scientific measurements. so if that rule is in your textbook, then maybe you should use it in class (ask your teacher), but i’m not trying to teach it here.

• Thanks for the video! just saved me for my exam tomorrow! ๐

• Thanks man

• If a teacher is looking at this, please know; If you’re failing your students, the. You fail as a teacher. Your job is to make your students successful

• Then*

• youve actually made chem real interesting; thanks dude

• Cheers man, this really helped me underdstand for my gcse maths in 3 days! You rock

• You teach me better than my chemistry teacher. She’s pathetic.

• Clearly. You mean “our teachers suck”.

• OH MY GOD THANK YOU! my chemistry teacher is terrible! she literally doesnt teach anything, just gives us packets and tells us to read it…. and then she gives us a test and we all fail! this made sig figs look so easy! thank you!

• Who knows Mr.Nelson?
This video also helped a lot.

• Thanks, however, it turns out that that my instructor said that only those numbers that have been measured are the ones that one should consider when rounding up, which i find so confusing. The problem was to convert 1.2 weeks into seconds

• here are two videos that might be helpful for this: watch “why are significant figures important?” and then “significant figures with measurements and counting numbers.”

• Hey i am from India and you are just too good…i have no words to describe how blessed i am feeling right now..in India students give respect to their teachers by touching their feet….and i just wanna touch your feet….please bless me SIR…
Thank you

• OHH thanks man I get it now.
thanks you for making the videos they are very helpful. hope I do well o my test on monday ๐

• Im here cos i slept in class

• perfect now all i need to find is a video on how to study for a physics midterm the night before :-/

• thanks!!! you’re page is making me love Chem !!!!!!!

• Safe man easy work helped:-)

• or because our teachers give us tests without teaching it

• omg need this for my maths exam tomorrow!! I didn’t know it was this easy ๐ When my teacher was explaining this i was wth O__O U DA MAN!!

• Thanks you explain this so easy

• i guess were are guilty

• What if you were multiplying 323 with 26. How many sig figs? You didn’t state that in your video Sir.

• What if you’re dividing two different significant digits on each side. For example, 767 divided by 47. How does that work?

• super appreciate ur video!!BIG THUMB UP!!!

• You are by far my favorite you-tuber, thank you very much good sir.

• Isn’t it 1.50?

• Thanks for the tutorial… I was confusing sig. figures with decimal places. It really helped!

• well you can find that rule in physics book for IB

• Ugh, I’m so confused..
Especially now considering the fact that an IB physics book is saying the oposite of what Tyler’s saying… -_-

• You were excellent !!! I totally got it with your help!!! But where is the rest of the video I could have really used !!!

• I get it now, Thank you very much this will help in my quiz tomorrow 7/8/13 ๐

• I need to round 53.97663855 to 3 sig figures.
Is it 53.9 or is it 54?

• It’s 54.0

• So what if you’re adding a two digit number with a three digit number?

• Really helped! Thanks ๐

• Im 13. ๐

• What if the divisor and the dividend have a different amount of digits (no zeros)?

• You’re just teaching how to base and to round off..

• Lmao, I learned faster with this video then I did in class… sheshh.

• then you pick the number with the least significant figures and thats the amount of digits you round to

• What if you have 763/56? There are 5 significant numbers here in all. What do you do?

• Since 56 has 2 significant numbers, you gotta round the final answer to 2 digits. The rule in multiplication or division in significant figures is you gotta round the final answer to least number of significant numbers in the question.

• this is a beautiful comment.

• For chemistry we have to round 3 sig figs to 1, how do i get 1 sig fig?

• Thankkk youuuuuuuuuu! I’m taking AP Chem this year and this is like a life savor..Because I’m like…WHAT and WHY?!

• Chord overstreet smart twins… Hehe

• Thank you sooooo much!

• Thank you very much !!!

• I’m taking pap chemestry and I needed help

• Enough with you and saying thats a really ulgy number seriously

• why the hell did the video end that last part I don’t know

• Thanks very much for this great video series! You should be a school teacher! I watched a lot of the following ones to understand my homework that he didn’t seem to talk much about. Thanks again ๐

• 7:06 Lets๏ปฟ take a look…..end No! No! Come back!!

• I think I’ve learned more in two of his videos than I have all year in class

• i am doing dimensional analysis but like my teacher wants the answer in to significant figures an i am confuse!!!

• I am doing a tertiary access course @ James Cook Uni in Australia and you sir have just helped me immensly!
Thank you!
Really well spoken, easy to understand and just well done.

• How would u work out one sig fig

• Thanks you helped alot with my chemistry honors class. ๐ subscribed

• WHERES THE REST OF THE VIDEO

• part 2?

• There’s a second video.

• yo i dont really get it but thats why base god fucked yo bitch

• to make you watch part 1.2 duhhh

• you’re an awesome teacher

• What would happen if you had 0 + 9,384,192ย
Ok, so you can only have 0 significant digits…
So you write the number as…

• He does do a good job teaching on this subject. There is however an easier way to remember all of this. Google the “Atlantic Pacific rule for significant figures.” It stayed with me for like 12 years. I just came here to see if my University’s book had an error, it did :s one of the given variables was 70kg and the answer the book gives is 9.0cm… Honestly though check that rule out, it’s easy to remember and you’ll never forget it.ย

• I have learned all things sig figs from you.ย  What I don’t understand is my chem book asks how many sig figs in 250mg?ย  The book say’s, “3 the trailing zero is significant.” That doesn’t make sense to me.ย  I thought it would be 2 sig figs. The 2 and 5.ย  There is no decimal, so the zero to the right should be insignificant.ย  Right?

• You’re right! And the book’s wrong. Without that decimal point, you can’t know that the trailing zero is significant, and it’s correct to assume that it isn’t. Just FYI, if that zero were significant, one way (other than a decimal point) to show that it is significant would be to put the number into scientific notation: when you write 2.50 x 10^2 mg, that would show that the zero is significant, because then it’s to the right of a decimal place. Good question!

• ย  I also went to chem tutor today, and they too said book was wrong.ย  I’ve yet to show instructor, but I will.ย  Keep up the good work.ย  Your explanations are stellar!ย  Now on to learning moles…

• 250mg is 0.250 of a gram and so that zero is significant. I think you’re thinking of it as a whole 250 instead of the decimal 0.250. Hope that helps

• @craig hay
;0

• lets say i have, 5.61 x 7.891 How would i know how much significant figures to round it to

• My Chem teacher said that you always go with the number with the smallest amount of significant figures.
5.61 = 3 Significant figures
7.891 = 4 Significant figures

• you’re right!!! my teacher too!!

• Thank YOU!

• LOL 3.58JNIkdhuani

• I GOT RAPED ON THIS PORTION OF THE QUIZ!

• Impressive circling. Whenever I circle my answers the ends never come together that neat.

• So agree with the title! It did make it so easy!!ย

• what happens if you have one figure that gives you 2 sigfigs and the other side give you 5 sigfigs… how many numbers do we round now? ย 2 or 5?ย

• @The Saracenย I figured that, thanks.ย

• Ok…he *might* be stoned in this one, but still…great help!

• I love you

• Thank you so much. You have saved me about 20pts on my quiz and much more in the future.

• Thank you so much.

• nice, thank you!!!

• This video before you become an awesome public speaker ๐

• Thanks a lot! I m real good at it now!

• what if one number has 2 significant figure and the other has 3 do u round it to 2 or 3 significant figures

• woah,just noticed,tyler DEWITT,you know?from bioshock infinite?(please dont be ย reading comments and get distracted by this,continue studying -.-)

• WOW! THANKS!

• Makes it look so easy :/

• This video before you become an awesome public speaker :P๏ปฟ

• I thought when there is a five in next to the number your rounding it makes the number even so wouldn’t it just stay as 3.38?

• thank u so much its help me alot bcoz no one teach me in my classmateย

• Thank you very much for this but . . Seriously you’re wasting papersssss . . I suggest you do this on a white board . .

• I am really learning a lot from your videos and think that you are a great teacher but I don’t like that you say “If your smart you probably already know…….” Although I do totally understand sig figs, I’m one of the ones that loves sig figs, it just makes my heart sad that maybe someone doesn’t get it and now they may feel worse about themselves because it should be easy and they still aren’t getting it.

• It’s not that deep

• you’re*

• S-kun ! srsly

• Yupp

• Thank you so much for sharing your knowledge and know how. This proved to be a great homeschool tool for me – and my teenaged daughter.

• Hm. I’m pretty sure this guy looks like a mix betweenย Samwise Gamgee from “The Lord of the Rings” movies and Riley Poole from “National Treasure”…

• do you have to round it all the time?

• @*****
The answer to this would actually be 11.3. The rules for addition/subtraction differ slightly from multiplication/division. The answer should be as precise as the least precise number used in the calculation. 10.120 is precise to the thousandths place; 1.2 is precise to the tenths place, which is less precise. So the answer should be precise to the tenths place: 11.3

• YOU ARE SO SMART . MATH? MYGAHD ! SO HARD

• You are amazing!

• I LOVE YOU, THANK YOU

• Dude made two perfect circles in a row wtf

• YOUR RIGHT!!! CALL THE POLICE!!!

• lmao

• Thank you so much! This helped a lot!

• I stopped at the 2 minute mark, needless to say I bombed my quiz

• Oh, Stalin, thankfully you didn’t bomb anything else ^^

• this makes so much sense now!

• Okay I’m having some problems with this, I understand the explanation you gave. But the program I am dealing with is ย problems like this: 30.053/60.33
I understand how you get the significant figures, but what I don’t understand is putting the final answer in scientific notation with the correct significant figures.

• in the second example why didn’t he round the 3 up to 4

• because you should write down the ans. with digits as the least no. in the division ( here 782/231) both having 3 sig. fig .. so the ans should having 3 sig. fig.( 3.39 ) but if u rounded it into 3.4 this is not accurate as u made ans. only 2 sig fig instead of 3 .. hope u got it :))

• Yes! Tnx so much

• I love you. Thank you.

• LOOL hes like ” if your smart … ” then he paused ” nah who am I kidding you ain’t smart”.

• what if the two numbers u are dividing do not have the same number of significant figures? ex. 678/23?

• @Tyler DeWittย thanks a lot man. My AP Chem. teacher in high school made this harder than I thought it was. She was a really horrible chem teacher.

• @Asiimwe N. 29

• What if itโs 0.8×0.8, does the 0 count as a significant figure?

• The one with less sig fig. So ur gonna keep two

• No the 0 doesnโt count because it is a leading zero

• God bless you. This helped so much.

• You are my saviour! XD

• on ย 4:11 why gte the 8 to 9 i though if the number to the right was smaller u didnt do anything but if it was bigger u increased it but 5 is less than 8ย

• If the number to the right is 5 or higher you round up and if its lower than 5 you round down. Hope I helped!

• oh k ty man

• @jorge gonzalez u r right……………..its a rule if number to the left of 5 is even we keep it same n if its odd we increase by 1.

• My teacher can’t teach so i had to come here.

• ***mrs.roy***

• ikr

• Chemistry is hard! Have you really tried as hard as you could to understand it? I’m a pretty successful HS Chem. tchr and my experience tells me that a lot of students don’t understand it because they try quite hard enough. Glad to see that you are here though. Good Luck!

• Pranav Nair nice pfp

• that’s why i’m here <3

• Excellent!

• 240p, we meet again.

• You made Chemistry easy. Thank you

• okay what if its just a given number like 0.00012?

• if 0 exists before decimal point then for 0.3521 its got five right then why did he round the no. upto .3521

• Helllo Buddy….i wanna ask why is butane is used in lpg cylinders,when we have Methane??????

• Big help thanks

• These videos really help and I appreciate them a lot

• Thanks Tyler, Jesus really appreciates all of your help.

• Thank you ! i have a chemistry ย final tomorrow and the only thing im stuck Sig Figs

• Amazing videos. Eloquent, Articulate, and Effective.

• Wow this video is OLD!

• @Michelle yes…I agree….they did not….but this video looks like it is coming through a tv made back then.

• Wow this comment is OLD!

• Brianna Hoff lmao

• Damn ๐

• JOON’S MOON and ur comment too

• As soon as an instructor says the words “if you’re smart…” I immediately discredit everything they say before and after that statement. There is no need to be pompous just because you know a little something that others don’t. Most especially when those “non-smart people” are looking to you for help.

• Matt Rumbel DAMMNN FUCKING REKT BY A YOUTUBER

• dracophyle lol get rekt

• dracophyle shut up dracophyle you butt hurt Mong.

Go to confession you need it badly

• This is nthg dude my professor said things that would make us not ask doubts when we were young

• Cut him a break Draco.

• Great video Tyler DeWitt, thanks this really helped me review for my chemistry final.

• What if you divide 789/65 ? Answer is 12.13846154. How do you know which numbers to keep if they are not the same amount of digits?

• Then you keep the smallest amount of sigfigs that they give you, in your example 65 has the least amount of sigfigs. Therefore your answer will be 12. with 2 sigfigs.

• thanks man !

• this is better than my maths class

• love your channel , thank you so much!!!

• Tyler you are awesome. thanks. this helped me in my college chem class.

• Like if you’re watching in 2015!

• For my chem test, I got every calculation right but I still got a 61% because I didn’t round the numbers properly

• @Chito surumi I know that feel.

• +Chito surumi I feel you mate…

• Imao thats cruel ….. in my school the minimum to pass a test is 50% …. your score would be considerd great if you were here

• In my school 60% is the pass mark

• Chito surumi thatโs why Iโm here too. I just donโt get it!!! I doubt my rounding.

and you want 5 significant figures.

• @Gokubleach09 The answer would then be 4.7046 since you want 5 significant figures

• Can you use ugly answers if you drink a lot beforehand?

• Thanks a lot!!!!!!!

• OK. This WAS GREAT!ย  I can’t thank you enough. My sister-in-law comes up to me and asks me for help with chemistry. I cringed because it’s certainly not my strongest subject. She hands me her notebook and I had no idea what I was looking at. I did a Bing search and found this video and we both understand significant numbers after having watched this series.ย  So, again. Tyler. THANKS!!!

• Very nice! Thank you : )

• you cant leave me wondering what happens if the the numbers of the equations don’t have the same number of digits.

• Finally someone actually explained it in simple terms!! Thank you!!!!!

• Godbless, I believe this saved my honors chemistry grade

• but what about decimals and different amounts like 561/1.9

• Yรฉรฉ๐ now I understand thnxโ๏ธ u make it easier for me

• I needed this.my chemistry teacher was coming up with the most complicated explanations for something that seems pretty simple.

• I’m so glad to have found your videos. I understand a whole lot better and feel more confident after each lesson. you have a gift of teaching.

• My chem teacher brought me here, I have to watch all 10 videos lol

• +Unlockerlocker Unlockme? Nice screen name.

• My teacher really couldn’t teach, his favorite to phrases in class were “it’s fairly self explanatory” and “don’t ask questions”, he also didn’t want to teach the way the book taught, because he’d learned it differently (40+ years ago) and he’d always get his math wrong.

• Ur such an inspiration for people like me. When I am older I would love to do videos like u!! I congratulate u on ur success so far!

• This guy is Luke skywalker

• Thank you !!!!!!! You are my hero . I am having a test on Monday and I had no idea how to do this.

• 7 years ago

• 8 now lol

• OMG SUGA!!

• saleh al-humaid 9

• saleh al-humaid almost 10 now

• Tyler, you rock! You’re gonna get me through this class!!

• Honestly, I see significant digits as a major waste of precious time and accuracy. But, school system demands I know it, so here I am.

• Tap Tap Adventure are they in any exams?

• true lmao

• If you think that you don’t understand what accuracy is.

• it is not a waste of accuracy, sig figs show how accurate you can get with given numbers (usually measurements). The “accuracy” you are losing out on is not even real accuracy because if you do not have the hardware to measure that small, you can not be sure that anything past the sig fig is truly accurate. Sig Figs ensure accuracy, they don’t take away accuracy, at least when it comes to actual applications of math

• I actually think these are detrimental in fields like medicine… I can see why theyโre a bit more important with less accurate instruments like a protractor or something. But in medicine, wouldnโt you want MORE accuracy if your equipment can handle it?

• Hi, please do you have a videos on PREFIX MULTIPLIERS ? Finding it very difficult especially converting to other mutipliers eg from meters to pico

• great!

• Thank you! this made the Matildas really understand significant figures!

• lol Tyler DeWitt in 2008

• dude your a good teacher

• Some of these information is wrong. 5 is a tricky number when it comes to rounding. For example, if the preceding number is even then you would have to round down. However, if the preceding number is odd then you have to round up.

• There’s a lot of confusion about this. That rule with the even/odd rounding thing was designed for accounting, for rounding amounts of money. It’s actually called the “Banker’s Rule.” But we’re not doing accounting or money management here, so those rules are actually incorrect to use with science. Some teachers tell students to do the even/odd rounding thing, but they’re teaching it wrong. The Banker’s Rule should only be applied to accounting and money calculations, not to scientific measurements.

• Get rekt

• +William Haydenman – the rule you mention is only applied if 5 is the last number in the raw answer. For example if you need 3 sig figs and the raw answer is 3.435 – the rounded answer would be 3.44. If the raw answer is 3.445 – the rounded answer would also be 3.44.
This rule is used in science and engineering because it eliminates the possibility of multiplying error due to rounding.
I provide my students with the following problem to prove what I’m saying.
Now round as they teach in the lower grades (5 or more rounds up)
1+2+3+4+5+6+7+8+9 = 55 That’s a 10% error
IF, however you use the rule you described, then only 1/2 of the numbers round up – the others “in essence” round down.
0+2+2+4+4+6+6+8+8+10 = 50
That’s right, the error disappears. In engineering when (for example – you’re building a bridge) you continually round everything with a 5 up… the bridge falls down (hypothetically).
Of course any number where 5 is NOT the last number, you would use the rules you learned in elementary school BECAUSE, if you look past the 5 for any other number example 501 is more than 1/2 way to 1000. 54 is more than 1/2 to 100.
I know that general rounding says to only look at one number to do rounding, but what is really meant is that you can’t round twice.
24.549 (rounded to 3 sig figs can ONLY use the 4. I can’t use the 9 behind the 4 to round it to 5… and then use the 5 to round up.
Hope this isn’t too convoluted to understand!

• I agree with the rule of 5 in rounding off numbers in terms of its preceeding number. That is what I am doing in my scientific computations. It has less error. But in fairness to Tyler DeWitt, your videos are awesome.

• What do you do when they don’t have the same Number of sigfigs for example 61/432

• When is then answer rounded up?

• Love how I got a 31% on my assignment despite understanding the lesson, then came here to find what I did wrong, but actually found that I already knew what I was doing. Great, I love school so much.

• Thanks you this video was well presented and easy to understand ๐

• PLS PLS PLSSS do a lesson on wavelengths and Electron Configuration +Tyler DeWitt

• thank you so much!!

• Do you also know pre calculus? You’re an awesome chemistry teacher and I really understood it with your videos. I’ve actually been starting to pass my exams and I have recently got an A on my test after watching and learning from your channel. I really need help with pre calculus right now and was wondering if you do make videos on it.

• Mr. Tyler? Do you teach college students? Are you only teaching Chemistry?

• So is 961 to one significant figure is 1000

• +Tea 4 life YES BRO

• ๐

• how did the answer in 56ร28 is 1,568 but why did you make it 1,600

• +Lorena De Belen There are only two significant digits in each factor so he rounded the second number in the answer up because the third number was a six

• +Tanner Myers but with the 8

• +MsAwit yes

• +Tanner Myers How

• +MsAwit sorry I misread your comment… No, not the 8… The 6 rounds the 5 up.. Disregard any other number

• how bout the 8

• The concept of significant figures in science is related to measured quantities, which should therefore have units. Without a unit, the meaning of the number gets lost. The unit is married to the measurement even though many students divorce them!! good videos despite the missing units!!

• i need part 2!!!!!!!!!!11

• can you please make a vedio on organic chemistry

• i always thought significant figure was referring to women…
now i know!

• Lol

• lol… I always think of the movie “Hidden Figures”

• MrCms007 ๐ ๐ ๐ ๐

• My Professor can’t teach so I came here

• Dude is like the Bob Ross of Chemistry. God Bless you, Sir!!!

• LMAO!

• lol

• Mama Realtalk lol fr

• I just started physics this week and I’m learning this here. thank you so much. I feel like i will be the one that understands it the most in my class!!! plus last semester everyone who had physics mostly had F’s, and D’s because they were strugginv hopefully I do well! I’ll continue watching your videos to see if they continue to help. ps. im in 9th grade.

• Your’re awesome man

• This mans a fucking Genius

• As

• Wish I could give you more support. I should have given YOU the tuition money I gave the local university ๐

• THANK YOU THANK YOU YOUR VIDEOS ARE MAKING ME PASS CHEMISTRY, keep at it your an amazing teacher

• To make it crystal clear my question is:why the other numbers became 0 or all become 0’s

• To me that is hard

• THANK YOU SO MUCH …….

• Wait i really needed to know that last part what do i do if the numbers doesn’t have the same number of sigfigs such as 123 and 12

• Be my teacher

• what if they dont ask u for a specific sf , what should u use then???

• I think it’s a good idea to always use significant figures so that you get used to the rules and it becomes second nature (that’s how my teacher always taught)

• yh ok, but what would you use if you havent instructed to do so?

• what about SF in temperature???

• dishdasha

• thank you so much for being so as easy to understand

• Exactly 8 years ago today

• Exactly 10 years ago๐

• nice like this lesson

• Where is the other half

• Thanks ๐

• Will there be upcoming videos on organic chemistry?

• You clearly earned a sub good sir.

• i dont get it what if it is 324×23??
do we take 2 sig fig or 3 sig fig????

• I was wondering the same thing. I think you use the lower amount of sig figs. My science textbook uses the lower significant figure, but I still don’t know.

• they would mention what number to round of

• 240p?

• 2008 dumbass

• in 1568 why make 16 with this 1600

• what if 602 x 34? which sig figs should i follow?

• hi

• tysm for brushing this topic so well … it has become more smoother +Tyler DeWitt

• what if The Original Answer is 20 and the Formula is like this a=10,000รท500

• and it needs to be 3

• I actually watched the video you made “Why are Significant Figures Important” first and then came back to watch this video and it definitely helped out a lot .

• Why the hell do we do this

• I fucking hate chemistry

• Miguel Saldana I hate my science teacher she teaches us something and she goes way to fast and says you should of paid attention and I have a D in that class

• christian Guzman my chem teacher is like that and if u have questions she will go over it but with an attitude and it makes me not want to ask questions because she makes u feel dumb for not knowing how to do the work

• me too

• same

• ive got a test tmw rip

• Thank you for helping this 46 year old through Chemistry. I appreciate your interest from a teacher’s view and making it easy and more understandable.

• this sucked

• wonderful review! Ive been studying for my nursing entrance exam and i had forgotten all of this from high school really great videos

• What about 5321/51 (1 four digit number and 1 2 digit)

• You round to the LOWEST number.. in this case 2. Because 5421 / 51. the 51has 2 places.

I hope this makes sense.

• +KindredGh0st but then how would you write it? 5300, with 2 “placeholder” zeroes or just 53?

• Hello Tyler great video,I am helping with niece with AP Chemistry and I am completely perplexed!! Can anyone please help?
A(n)__________________ is any substance consisting of two or more atoms held together by a chemical bond, while a(n) are two or more atoms of differing types held together by chemical bond.

• Molecule and compound

• Thanks again and keep the videos coming!!!

• happy teacher day sir.. u are the best teacher i ever got..

• I really don’t like this. But I am forced to learn it.

• @Hankdatank12345 Sorry, but where I am, Chemistry is needed to pass high school, so sorry for choosing to get an education

• You do not need to apologize for making a good choice.

• Like he said, learn the basics and with a bit of practice this is second nature.

• Hankdatank12345 this is basic stuff that you have to learn during compulsory education. Most people don’t have a say in whether they’re in education at that age or not.

• It look pretty easy

• is he wearing a wig

• Thanks so much!!

• CodytheAwe5ome Iz Awe5ome

• Harambe

• Thank you so much ! this really helped, i have a chemistry quiz tomorrow and I can’t understand sigfigs, now i have some information and I’ll be looking at the second video for the information about ZEROS. but thank you !!

• That’s how I precisely feel lol

• Hey buddy

• come on university is not simply…….

• So crap I got 0 on my maths homework because of this guy

• This helped so much! Thank you!!!

• Good review for chem honors thank you~

• I honestly am thankful for this video but once I’m out of college and pursuing my interests, I will have no recollection of this video. But for the time being, thank you.

• bowl cut

• God bless you Tyler ๐๐ฟ #blessed

• #blessed YA BOIIIIIIIIIIIIIIII!!!!!!

• My teacher made this look hard but its easy thx solo much Mr. DeWitt

• what if there aren’t the same amount of SF in both the things dividing ??

• I just wanna say I no longer have a D in chemistry BC of these videos !!!!! TYSM

• Thank you, that was really useful…
๐๐

• You explained like what a old man would do -_-

• Who else is here because their mom told them to do something constructive with the internet instead of going on fb and talking to your friends on wattsap?

• I love you so much for this๐ญGod you’ve made my life so much easier

• Thanks bro you saved my life lol

• i find significant figures kinda confusing. it seems similar to decimal place but apparently im told that theyre not the same. i researched and read this website i found and i swear it made me even more confused, but this helped a little.

• Mr Bailey,

I am only 12 and you expect me to find a video on the internet explaining this in a way I can understand? You’re crazy sir. Why can you not just make us do some work in class about it? After all, we have no idea what any of this stuff even means. Why not explain it in class and *then* make us do homework on it?

• thank you.. I have a test next week..

• I had a test after this so,I’m happy i watched this

• And here I had a test before watching this video. I’m so sad I watched this after my exam >.<

• I really enjoy your teach, the last year I was exchange student and you teach me very well thanks ๐๐ป for teaching me, and for you it’s that I pass my final exams โบ๏ธ thanks

• 00:01 dat moment when you rip bong and then remember you gotta do a chem video

• wow! This is so much easier than my chemistry teacher made it sound.

• I have an exam on this tomorrow morning yet here I am at 2:00 am, 4 hours before I have to wake up, getting my first REAL lesson on this because my teacher fucking sucks

• the man

• Question: 56 โข 28 is in fact 1568. If we use significant figures and round this answer to 1600, aren’t we _losing_ precision? I thought the whole point of significant figures was to ensure precision.

• Maybe someone can explain it better but i will try. The answer would be 1568 if you were sure that these numbers (56,28) were “correct” What do i mean:

Let’s say you have to weigh something and the number you get is for example 1.5 kg.

1.5 kg is not the precise weight of the object. It could be 1.51 kg or even 1.5798981239821739973129 kg.

1.5 kg is the best that the particular scale you are using could give you. The best approximation, not the true value.

So if you cad to subtract the weight of another object whose weight is know with better precision, let’s say 1.211 it would be wrong to say that the net weight is 1.5 – 1.211 = 0.289

It is like answering the question: “How tall are you?” “My height is 1.8123080432905702542304732 cm” , while using a simple ruler to make the measurement.

• I thought whole numbers had infinite amount of significant numbers? when is this true?

• Awesome, took my first math class with Sig Figs and now I am using it in Chemistry and this gave me a great refresher! You’re great ๐

• That was very clear and concise, but when you said that zeros don’t count as signifcant figures ever may confuse some people as that would conflict with later lessons such as if a decimal place is expressed after those trailing zeros.

• What if you are multiplying with different amounts? Say, 242 x 30 so you have 3 digits multiplied by 2 digits. Then which amount do you refer to?

• Chemistry sucks, but you’re teaching is awesome! You made it easy for me, as 123. Thank you!

• youre the man dude!

• u looked so youngggg

• I’m converting 20.1celcius to Fahrenheit. My teacher says I have to apply the rules to each step. But if I do that I come up with the wrong answer. Help!

• I fucking hate chemistry. Js

• sam wise

• First time in your site Mr T.D I think your method of teaching is beginning to change my hate for chemistry. You are awesome Thank you.

• still confused about log and 10^x sig figs.

• what if both numbers had a different amount of sig figs? like 345/12

• Does anyone know how to express 99.518 to 2 significant figures?

• Just wanted to say Thank You! for making chemistry fun and easy to understand. You are the best, Mr. Tyler! I wish there areย more peeps like you who not only love their job but love to teach as well. You’re definitely THE best chem teacher! Wishing you love and success in all your endeavorsย  ๐ … from, Your #1 Fan!

• wouldn’t 3.385 round to 3.38 due to the 7 up rule?

• uploaded on my bday ๐๐๐

• I learn sig.fig. in maths

• i hope you were my teacger

• soory sir afterall i know that in significant no preceding digit is even then we don’t have to add 1 and you add 1…..

• Thank you for this ! I’ve even stuck on this for ages and I have my maths exam tomorrow !

• 8135+1026

• Someone help me figure out why this problem is NOT 3.40 and it’s 3.39! Thanks

• The problem is : 782 divided by 231

• my college professors weren’t as clear as this dude is. Bless you Tyler Bless you!!!!

• I am in 7th grade in the middle of summer I like learning

• still dont understand what you do there

• i dont think signification figure digit are hard because it depend on the type of teacher cause my math teacher teach make me understand but how he explain im lost

• my teacher can’t teach so I’ll be around here for good whiles๐

• No help

• Lovely!!

• hello, Tyler I just watched your TED presentation and I completely agree with your approach. Making the beauty of science achievable and comprehendable by everyone no matter what more important in the long run. Great job!! keep going maybe the Big institutions will catch onto your genius insight.

• Wow!!! THIS IS VERY EDUCATIONAL
Wait……….let me just do something

*Clicked Subscribe*

• You have taught me more than my professor. I’m so grateful fir your videos

• Tyler where did you go? you videos are so great!!!

• I liked ur vsepr lecture…nice

• You devided the number with same number of digits what will happen if number of digits are different

• 2017 here.

• this is not helping not at all

• THIS WAS AMAZING!

• Can u plz give a full complete lecture on atomic structure…

• pickle rickkkkkkkkkkkkk

• So simple! thanks

• Thank you for this video people like me who aren’t good with numbers really appreciate it! ๐

• Why can’t teachers explain it this easily

• This video and your others have helped my kid a great deal. You lay things out in order and make it make sense. Your efforts haven’t gone to waste. Thank you for your efforts. Kudos!

• THNAKS FOR THE VID

• I LOVE YOU

• 4:20 how come the 8 didn’t round the 3 up??

• Am I the only one who didnt learn this in chemistry and is now in Physics struggling

• Upvote because of Lord of the Rings

• make flashcards and test yourself for just 1 minute once a week and you will be better. don’t be lazy if you want to understand them

• what if the numbers have different amounts of digits

• My teacher teaches well but I don’t understand her accent

• Just saved me a lab that was due. Thanks, man!

• “I would teach you sig figs before I gave you hw on them, but you’re an honors class. I’ve mentioned them a couple times without explaining them, so you can teach yourself” -my Chem teacher

• Thank you for your help. This will get me a wayyyy higher score on my test.

• i failed at my quizzes ’bout this topic so i have to learn this for my midterm exam which is tomorrow :/

• Just found you! My professor is new and me and my class are guinea pigs. So grateful for you!!!!

• 62/31 =2 lmao

• Than you! You make these so easy to understand

• Which software you use for teaching ? It’s really nice .

• Could you please make a video on Lewis structure??

• You are awesome. I don’t know why I’m graduating college anymore. If this video is worth more than a semester

• Good thing my teacher said that he was some real eye candy

• You sir are the bee’s knees

• Thank you so much for making it so easy to understand!

• nice video i now give value to significant numbers because my school concentrates on math alot so i need to use it at division

• you are too smart

• Great explanation! Thanks Tyler!

• My teacher gives me headaches! ๐ฃ

• why chemistry? I’m learning this for maths lmao

• Science, where a simple number like 245 can be 2.5*10^2. Which is simpler and more accurate with the least writing?

• Thanks

plss tell

• Love it

• what about if the two numbers don’t have the same amount of significant figures for example 7782/513

• Why doesnโt the 8 round the 3 in the second example

• I got an F on my chemistry test because of significant figures. even though all of my answers were correct!

• Sen kralsin reis
You are the king of the chemistry

• Whoโs watching Iโm 2018…

• 2018 and teachers still don’t know how to teach…

• 2018 bois?

• 2019

• 2019 ๐

• 2019 actually

• 2020 now guys

• 2347? Anyone

• Look at this goof

• So this is what Luke Skywalker did after they blew up the deathstar. Pursued a career as a math teacher.

• in engineering we just use a precision value. For example, at the end of a question it will state “precision of 0.00” which seems much simpler for me.. however answers may vary more with this method

• 10 years later and your still helping people! ๐

• Sir. I have a question.
Why carbon atoms do only covalent bonding in their compounds?

• I had to subscribe cus this boy right here will be my teacher for physical science

• You are the reason why I always gets A+ for maths and chemistry. Legend and my hero

• I would pay you a billion to be my teacher

• My professor can’t teach so what did I do? come here lol, ole reliable youtube

• do not stop making a video for chemistry you the only teacher I understand you

• wouldn’t 56×28 = 1,568 end up being 1,6 x 10^2 instead of 1,600?

• 9 years ago…lol. This video is pretty old. XD

• Thank you for showing this, much appreciated

• Your video is good but you should also give examples in which two significant figures divided by 4 significant figures

• This had been posted 10 years ago….

• thank you!!!!

• Whos watching in 2018 lmao same school bs every year

• Woah itโs crazy how far your channel has come- watching a video from 9 years ago is crazy considering we have to watch your more recent videos for chemistry all the time. Kudos to you !

• this guy is a legend

• What if itโs 142.997 /0.987

• great teacher!!

• Who is watching in 2018 ?

• you should start a religion.

• So this is what you do when you solving the boyle’s law?

• This guy is the reason Iโm passing chemistry so thank you.

• 2018 anyone?

• Sir please can you explain about electron hole and can proton move?? I am confused

• 10 years and 2 days since uploded

• who else is learning this in 2018

• ๐ฅThis is flappy and he canโt fly.
One like= 1inch off the ground.๐ฅ

• sig figs come from the accuracy from which they were measured. So if you had like 2 to 3 meters but you don’t know and you have to measure it with a meter stick that had no markings on it. So you measure two meters and the last part is shorter than your meter stick. You could guess so lets say it looks like 0.6 of a meter. your SIG FIG would be 2! NOT THE 0.6! You could accurately measure the two meters but not the 0.6. Now if you did this many times you could see where adding these things up could cause you to have way too much or not enough.

• 2018

• spiderman

• That’s d beauty of significant figures, they make ugly answers beautiful.
Thank u Tyler dewitt 4 d video.

• Oh!
It’s quite baffling to know significant figures๐ถ
But, after watching your video atleast I could understand WHY IT’S NECESSARY…!
Hey! It should be renamed as WHY SIGNIFICANT FIGURES ARE SIGNIFICANT – it will attract more viewers,trust me!!๐

• Thanks for explanation

• 2018?

• Thanks Tyler Dewitt

• THANK YOU SO MUCH. I got an A in my chemistry class because of you. God bless you.

• 10 Years later Im still doing this

• Speed it up dude

• thanks know I will past my mathbtest

• can i have you as my chem teacher…

• 10 years ago woah

• I’m a Senior High School Biology teacher but I’m given a Chemistry subject to teach, having a hard time at first but your videos really helped me a lot! Thanks!

• Who is watching this in 2018.

• 2019๐

• Oddly, you never explain the purpose of significant figures for never do you once reference the concept in relation to measurements. Not really criticizing though. I have learned so much from your videos over the years and would like to thank you more than anything else.

• wow, it’s already july of 2018 HAHAHAH

• Oh my gosh this vid was uploaded ten years ago

• Significant figures don’t bother me as much as order of magnitude does
I’m like wtf
Why would you do that

• oof

• Watching in 2018. Damn.

• I still don’t understand this from sophomore year college freshman here

• What if there where 4 significant numbers to be devided into 3 significant numbers?

• Ryan Mark Madiwo Your final answer would contain 3 significant digits. It canโt be more certain than the least certain quantity.

• lol….three-point-three-lubblububuh….

• Rules to determine sig figs:
1) All none-zero digits are significant
2) Zeroes in between of Non-Zero digits are Significants
3) Zeroes at the left of Non-Zero digits are not significant
4) Zeroes that fall both at the end of non-zero digits and a decimal point are significant
5) Zeroes that are found after a non-zero digit but contain no decimal point are not significant
I GOT THIS FROM MY CHEM NOTEBOOK.

• 2018 ๐๐๐

• How do u put it in scientific notation

• Thank you for doing this. Watched all of your videos on sig figs and scientific notation. Really appreciate this. Thanks again!

• Thanks, Saved my packet for 9th grade

• Make a video like this but with examples on numbers like 3427, ones that have decimal points, and acientific notation problems!!

• God bless you!

• omg thank you this is all clear to me now!

• Thanks so much, 10 years later and youโre still helping teens learn

• 2018

• I’m watching because I have a test tmr๐….Wish me luck please

EDIT: GUESS WHAT!!!! I PASSED MY FREAKING TEST …. Thank you so much for this helpful video ๐๐

• Patriot9827 Thanks bff๐๐๐๐

• Kaira Castro good luck

• In science we want to be really accurate to the bone then comes along significant figures. Like WTF.

• my god you are the best! taking Inorganic Chemistry rite now and your saving my life so far!

• ูุงุงุงุงุงุงุงุงุงุงุงุงุตู ูุจู ููุจุจุจุจุจู

• 10 years for help other ๐

• Wonderful! Thanks

• Hey Tyler!
Thanks for the wonderful videos! I was hoping you might be able to update this video so that it is in HD. I use your videos as a supplement to my class for students who may need more review after class. One of the comments I get is that it is hard to view or “old”. I know the content doesn’t change and you do a great job with delivery – again, very appreciative of the video… just wondering if there is an updated version coming anytime soon. Thanks!

• Mrs. Cillis

• Wish me luck for my test tomorrow

• You keep using the word “number” when you should be saying “digit”. 64 is one number composed of two digits.

• The reason why I am passing, god bless this man.

• They claim the purpose is to maintain the precision of the initial numbers, yet they’ll willingly cut a multiplication of two numbers to 1600.

• Why does the 1 not make it round up/down and the 5 does? Can you explain that to me please.

• WOOOAH this video is ancient!! hahaha

• where my 2018 gang at?

• Just here because my teacher assigned my class to take notes lmao

• The quality of the video bugs me. But what can I do? I really need to ace my Chemistry test tomorrow :’)))))

• writing from 2020

• any one from 2020

• AY KBI just 2019 fam

• Watching over 10 years since the video was posted

• PLEASE do organic chemistry videos

• Taylor dewitt you look like Zach efron if its far

• Hi

• Thanks man this was really helpful!

• High School teachers, college teachers; they do not teach. They expect you to teach yourself. They are only there to give assignments and you have to go figure it out for yourself! I find Tyler DeWitt a great help. He is so much better than all the teachers I ever had in college.

• I absolutely love your channel, just love it! Thanks so much!

• Who here is watching this before a test

• Dude be lookin like Sean Astin and Jim Halpert’s love child.

• Hi from Turkey in 2018 ๐

• O noooo I didn’t pick up on it guess on stupid RIP

• Excellent

• I hate significant figures so so SO much but thank you for explaining it

• Hi cicada!!! Enjoy your PSI seminars while you can.. itโs all going to come crashing down when QUINN finds his real family.

• I have a test in an hour… wish me luck I guess, lol

• A life saver, now gotta learn 3 life subjects :/

• Who needs school, when YouTube has everything there. ๐

• normally i meme coments but this video is so god damn good

• Why did you stop teaching in YouTube?

• Thatโs mean donโt call the numbers ugly

• Yeah he is mean

• Can this be used for maths?

• the video was cut

• That is the very helpful video thank you so much sir !!

• What if it is 4 significant figures divided by 2 significant figures?

• I was 4 when this was out

• Hey bro thanks you cleared my doubt so i scored full in mathematics

• thank you so much i was absent the day my teacher taught this lol now i have the hang of it

• 6:42 “If you’re smart” *Giant Pause*
Excuse?

• fred from scooby doo before the fame

• Thx!

• this man is a god

• thank you for this I understand so much not like my teacher

• Thank you so much

• Thanks a lot

• The fatal flaw in your series about significant figures, is that you never even attempt to explain the meaning (and significance, pun intended) of significant figures. All of your videos on significant figures are, essentially, fundamentally useless and flawed, and only serve for rote learning but not for understanding.

• Great Workkk..and From 2008..Im proud of you

• 2018?๐

• Wow this was 11 years ago

• You are doing gods work

• i just hate chem ๐

• M8… this isn’t a speech, you don’t need a long intro (1:10 seconds), most people are in a rush to study or just want the video to cut to the chase.

• Bruh u have changed

• Thank u sir my math teacher’s a bum

• 2019 peeps?

• 2019

• 2019?

• Where 2k19 at

• 2019 or nothing

• 2019 GUYS?

• Subscribe to T-Series

• watching in 2019 this video is almost 11 years old

• U are amazing!!!!!

• What about numbers like 103, 10.3, and 1.03? Are there 2 significant numbers or 3?

• Damn. This is dogshit

• You keep having the same examples. For example, 4 digits multiplied by 4 digits and 4 digits divided by 4 digits. You need to provide different types of examples, not just multiplying and divide.

• Iโm doing online chemistry. Sometimes reading from the book doesnโt help.

• Still best chemistry teacher 2k19

• ok so what about a number like 323 / 23 =? how many significant digits

• We on the real chem grind bois

• Top 10 cliffhangers

• Day before a test squad wya

• Thx for teaching!!!

• What a teacher !.thank you

• I have finals tomorrow

• what if on dividend is of 2 digit number and our divisor is of 1 digit number

suppose , 21 / 3 then what should we do in that case.

• Hi Tyler my name is Aline I wanna thank you for your awesome videos, theyโre very helpful. So I was wondering if you can help me with this problem Iโm pretty sure itโs simple for you ๐ The “normal” lead content in human blood is about 0.40 part per million (that is, 0.40g of lead per million grams of blood). A value of 0.80 part per million(ppm) is considered to be dangerous. How many grams of lead are contained in 6.0 x 103g of blood (the amount in an average adult) if the lead content is 0.62 ppm. Thks for your help already.

• Hello can you pls do a video of significant figures with multi calculations? With addition, subtraction, multiplication and division. I want to know what rule is followed for these calculations. Thank you very much..

• 2019 ?

• Hello from Finland. Thanks for the great videos, especially electrochemistry! I have resently taken those chemistry ones into my teaching curriculum. My pupils are capable of following english and I want to give them another, uncluttered view into the mater.

• Significant figures seems to be the only thing Iโm struggling in on my chem quiz!๐ซ

• You teach very well sir.

• Thank you.

• dang dont call the numbers ugly

• lol love the show

• @ 5:56 he gets 1600 as a final answer. But he needs TWO significant digits. I was taught that every number greater than one and on are the amount of significant digits you need in the final answer. So 1600 doesnโt make sense to me. He couldโve just kept it at 1568, because it has 4 digits no matter what.
Am I missing something?

• THANK YOU SO MUCH

• Thanks napoleon
Gosh!!!!

• So it basically Decimal place?

• Who is here at 2019 and is not allowed to play fortnite

• 6:42 what if ur not smart. Will u make a part 2 lol

• 2019

• thank you very much.

• 2019 dudes hit like……

• 2019

• Who here from 2019?? 11 years later lol

• Actually, it’s sig figs

• Thank youuu

• Where have you gone???

• 2019

• Thank you Soo much

• 2019 here guys?

• 2019 ๐

• What if it’s a 2 digit # divided by a 3 digit # ?

• Damn I was 3 years old when this came out and now I’m just seeing this in 2019! And I’m 14 years old.

• Hey Tyler, great videos. I have 10 and 14 years old boys who are now addicted to your videos. You really make chemistry fun. Helped immensely to switch their addiction from fortnight. God bless.

• april fools 2019

• Anyone here in 2019 ??

• 4:11 that was so beautiful

• 2019?

• what if you have one number with three significant digits and another with only 2

• 2019

• Who’s here in 2K19?

• how did you grow looking younger

• Thank you so much, you have been a great help, like really you just save my life. Hope & blessings you and your family. Best wishes goodbye

• Omg 11 fast years ๐

• This video is posted about 10 years ago but still helps students to this day. Tysm ๐

• Why is this in my recommendations

• Wow we have successfully just made our answers less accurate on purpose ๐

• Who’s watching it in 2019, like it!

• My teacher must suck at Significant Figures because he couldn’t round my 68.5635 grade to a 90.

• 2019?

• 2019 , any mate here ?

• 2019…,

• Dude U are Awesome

• Nice

• 2019?

• 2019 frfr

• wwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwoooooooooooooooooooooooooooooooooooooooooooooooowooowwwwwwwwwwwwwwwwwwwwwwwwooooooooooooooowwwwwwwwwwwwwwwwww

• just started my chemistry class this summer. thanks for this video.

• what if my life is insignificant?

• So whats the purpose of finding significant figures in the first place?

• For me math is
M-ental
A-buse
T-o
H-umans
Even though it’s science but still needed a computation!

• Sir I request you to explain solvay process!

• 2019 bois?

• 2019 bois?

• 2019, hey people wassup

• Can someone tell me how to do this kind of videos double screen I need to make some videos for my students please help

• this is the worst video fย u

• Him:
Youโre probably in the middle of the year
Me:
Iโm trying to learn chemistry in 2 days for a placement test ๐คฆโโ๏ธ

• My mom is forcing me to learn chemistry when i just finished 6th grade and its summer vacation.
I hate my life

• LMAO my first chemistry class is in 19 days (10th grade)

• 2019 guys???

• Einstein is angry for the ugly number, as you said it

• Who else didnโt pay attention in class

• This is the whitest video I’ve ever seen

• 6:49 โif youโre smart…โ oh, hit me right in my jellies ๐

• 2019 anyone ๐?

• Well this wasnโt rlly what I was looking for but thx for the tips for the future of chemistry ๐ฌ

• At first I thought he was referring to significant historical figures lol

• Anyone else just find it kinda weird that u can see time stamps from kids struggling 8 years ago and now their out of college?

• Never really thought about it but now that you say something it is really interesting

• bro thank you so much my teacher is so fast

• Iโm struggling ๐ฅด

• Tell me why this guy is better than all my math teachers combined

• 2019 honors chem grade has been officially saved thank you

• harvey dent ass

• Use decimals next time smh common sense

• props to this dude. he got me through high school chemistry. Currently in college and back for more man. If anyone needs help this is the channel to go to!

• Play at 0.5x speed.

• Yes but what if you are multiplying or dividing numbers with a different amounts of significant figures

• weโre screwed

• @kira hiebert oh

• He says it on the very end, I think it’s in the next video

• I was half sleeping in my AP Chem class so i needed this review

• That didn’t help at all – Spongebob voice*

• 2019 ma dudez?

• 11 years later , and here I am learning from your videos

• My teacher can’t teach lmao, she couldn’t explain this right to the class in 49 minutes but Tyler DeWitt can explain it successfully in 5 mins.

• Nicholas R
Lmao ๐. Good luck though ๐๐ฝ

• What if I have a multiplication or division of numbers with different amounts of significant figures like 324×23
How many significant figures do I keep on my answer?

• Jenn M. The least number of significant number is what you consider. So, in this case you take the 23 which is 2 sig figs

• Letโs do that-

• i was 4 when this video was made

• Saved me tysm

• I have a good teacher Iโm just retarded

• hi i was just wondering that does this always work on math as well?

• I have a chemistry test today so.. here i am

• My teacher recommended you

• Wtfffff Iโm here after 11 years

• he left us on a cliff hanger

• bumbk

• 2019

• Youโre doing gods work

• What if in your problem you multiply a 1? Do you round to one digit? For example 5,896,671 would be rounded to 6,000,00?

• 2019 11 years after this video

• Amazing, your channel helps me so much. Thank you!

• 2019 yeet

• YEEEEEET

• we love fortnite we love fortnite

• yeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeet

• yeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeet

• sharyland pioneer

• USELESS VIDEO

• 2019 ๐คท๐พโโ๏ธ

• this makes so much sense now

• Saved me from low marks !!!

Ur the best!

• What happened to the rest of the video

• What if the two numbers you are dividing have a different number of digits?

• 2019 GANG BABY cause my teacher cannot do his job right so I’m here

• Sig figs made easy good work:)

• 2019 bois?

• Me!!

• When am I going to use this like Iโm not going to go in a shop and ask Linda at the counter to round the price of my beans to 2s.f

• Letโs hope I can pass my midterm today๐

• what if the problem was like 3284 divided by 345

• WHAT IF the 2 numbers you are multiplying aren’t the same number of SF. what if its 35x 3256

• Why cant teachers fucking teach? I have to go online for every new subject!

• This was uploaded on my 5th birthday.

• damn thats years ago,
any ways can you give my channel a little support please

• thank u so much it helped me i was so confused now i understand better ๐๐ 2019 gang

• 2019??

• 2019 bois

• Well uh technically all numbers have infinite 0’s to the left side so uhhhh checkmate people who believe in bio diversity.

• i swear i was born in the exact day
of when he posted the video
i was 1 second old and he was telling math that is old as me
OMG

• Who Watch in 2019 ??

• 2019

• you just saved my life appreciate itttt

• 240p? This is so retro xD

• Significant figures are significant because they were read off of an instrument (always estimate one decimal place beyond what you can read). All of the significant figures rules are based off of this basic measuring concept.

• 2019 almost 2020 lmao

• I have a test tomorrow and did no revision so thx

• Finals anyone

• Still as handsome and beautiful as God damn ever

• Everyone in this comment section is just hopeful of passing their chem midterms/finals as me ๐ฅบ <3

• this video shows that sometimes video quality is better than just camera quality

• Can you please make videos on titrations, back titrations, and redox titration calculations? Along with enthalpy questions, please? I’d greatly appreciate it!

• 12 years later and he is still helping students understand

• Thx dude! Keep up the good work, this helped me a lot. 2020! ๐

• You look like Samwise Gamgee.

• Thanks lol. I legit was stumped in class. This made it easy

• Hi
If I mix tow different materials, such as limestone and clay. Then I mix the two materials as 80% of limestone and 20% of clay.
How can I calculate the total percent of CaO in the mixture ????

• it 2020 and the quality of this camera…. is just…. ๐๐

• i love you

• i’ve signed to online chemistry class, knowing that I will watch Tyler non-stop

• January 22 wednesday 2:10 pm

• This is guy is the definition of *M00d*

• Hewwo by 2020

• Trying to figure out if I want to do chemistry or physics

• Wooow this was incredibly helpful! Thank u so much ๐๐

• Honors Chemistry peeps?

• Your 10 year transition is like Jim’s transition from season 1 to season 9 in The Office lol

• 2020

• 2020?

• we are in 2020, and I am here. Thank you so much!

• 2020

• How would I do 1.10cm x 2.0cm in correct significant figures. PLEASE RESPOND. I NEED HELP

• 2020 anyone?

• meee

• Wow 8 years ago!!!

• Thanks I have a quiz today and I feel a lot better

• I hate math all it’s good for is ruining my gpa.

• What if they’re not the same number of the two numbers that would be solve?

• I luv u

• Tyler, I’m a High School Chemistry Teacher setting up to make online lectures for my students. I’ve used a lot of your videos (Thanks tremendously btw) and had a question about what equipment and presentation hardware and software you use. Any tips as well?
Thanks again, really appreciatethe videos as do my students!

• Lesson is good but his head is more big………..

• Me : (Showing my friend how accurate I am, by getting answer 3.38528)

Tyler sir (enters the chat) : hmm, that’s an ugly answer.

• None of the teachers or videos were able to explain the purpose but you did๐

• you look like samwise gamgee

• anyone from 2020?

• I decided to binge-watch all of your video this quarantine, haha good luck to me. I never failed in my chemistry class but I feel like this is my weakness (I even have A grade but because I try so hard, I forgot everythng after exam). I always find this subject the hardest but I will try my best to overcome that.

• Any from ๐ฎ๐ณ
WHO’S WATCHING IN 2020

• 2020 corona homework anyone?๐

• I was 2 yrs old when he put this up on yt

• im in 8th grade why am i watching this

• Somebody here after 12 years?!

• Hello… Can u please teach laws of chemical combination…

• Thanks a lot . โค๏ธ๐

• For this simple explanation . I really a appreciate it

• Hello sir Tylerโค๏ธ I am one of your fans po since college days …Hope youโll notice me๐๐

• 3:27

• anybody from the corona era ?

• sir .. i think at 4:11 it should be 3.38.. isn’t it????????????