Using Significant Figures Practice Problems (1.9)

To see all my Chemistry videos, check out
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Measurement vs. counting and how to round: a bunch of practice problems to work on using significant figures with units.

[@billssamples]

I spent an hour watching the whole series, and I can say that without any "uncertainty" I don't regret doing so.

[@tdewitt451]

Hey everyone, I'm here to help. If you have any questions or just want to learn more, click on the link in the description above. It'll take you to a page where you can ask me questions.

[@ifaa83]

omg you need to NOT apologize for wasting anybody's time - we are here because our TEACHERS are wasting our time and you are ACTUALLY teaching us! step by step! you ROCK! waste my time! (;

[@monukr6927]

Lol

[@tdewitt451]

if you're good with 1.3 and 1.4 (that's where i talk about significant zeros in the first place), then watch 1.5, which is where i first do multiplication and division with significant zeros.

[@brockmolloy5532]

thank you SO much. watched the whole series. SAVED ME! THANKS THANKS THANKS THANKS THANKS THANKS

[@babcocklynne6775]

I just started Chem 130 and have had no chemistry before. Your videos are really helping me grasp this stuff. Thank you!

[@ControlsYourLife]

You're the real MVP! Loved the videos!

[@MrVex123]

Thanks sooooooo much! I really understand it. My teacher spent 3 hours and half on this unit for chemistry, and majority of the class including me was confused. 1 hour of your series and i got 100% :)

[@jennahjohnson6636]

This man is single handedly saving my life

[@bluehornet6752]

This is the best (most helpful) video of your series--although they were all excellent. GREAT review of sig-fig material. Thanks for the effort!

[@Nebuljr]

At first I didnt get Significant Figures at all!! and I was scared I was going to fail the course...but thanks to you and your videos...I understand completely!!! Thank you sooo much and I hope to keep seeing more vids of you.

[@theodorlee3198]

Tyler, i don't understand how 14 or 34 counted people represent infinity people. Shouldn't it be "14." to show there are 2 significant figures since you counted them and are certain? ...I've watched all your video's till this one.

[@tdewitt451]

They aren't infinity people. They are 14 people, but you know they are 14 people with infinite certainty. For more info, watch my video called "Why are Significant Figures Important?"

[@tRilLot22]

+Theodor Lee I am pretty sure when they say that it means 14.000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000... and beyond ( it is an exact number )

[@clever_gadgets2024]

+Theodor Lee I have the same question too...Ive been following all the videos and trust me, I love the way he teaches. Very good and simplified to the roots.
Tyler DeWitt, keep up the good work

[@brandenlee5725]

Would a better explanation be that there's a distinction between discrete and continuous variables? The former would be measurements that have a countable number of values between any two values and the latter would be measurements that have an infinite number of values between two values. Thus we use sig figs for continuous variables because we are specifying the number of digits and we dont for discrete because there are finite and definite choices.

[@sherylbegay]

I'm so happy I found your channel!!! Your channels have helped me so much for Chemistry. Thank you!

[@mistysworld_]

thank you for your videos!

[@stip0708]

You should be a professor, if you are already not. Great job A+

[@331446757]

You sir just explain it so well .... just did my first chem assignment for me :)

[@BahramGhebray]

just wanna say thankyou very much. i wached all the sf videos and they were awesome. i wish youn were my teacher.

[@hanna1597]

These are lifesavers, thank you! :)

[@emergency.jergens]

Omg who runs 8 miles so casually

[@josegomez6549]

+Emergency Jergens lol. Math problems sometimes give absurd statements. If you ever bother to actually read what they're telling you, you'll have some laughs from time to time.

[@MoonKing-ih1pv]

Eminem... :)

[@gracied7636]

if you run cross country then...

[@husseinnasser9303]

"i would like to ask you a question. the number 14.85 i learn in my university becomes 14.8 because 8 is an even number is that correct??? "

[@yalininadar8527]

Omg same I'm so confused now

[@crackmensus]

Yes, I think so. And after the five only come zeros, thus It's 14.8 not 14.9

[@sakshamdobriyal9952]

Yeah bro same confusion

[@ranjanasingh9691]

You are right

[@tayyabamustafa6728]

absolutely. The rule is written in the book. why did he write 14.9

[@mariayanakieva5157]

thank you so so so much for the whole series !

[@ThiaGoisOrtiz]

thanks man.. all your videos was helpful for that.. do you teach all the basic of CHM? or just did those videos about SignF. ?Thanks man for all videos

[@Th3TruthHurts]

omg i watched them all thank you so so so much!

[@yacinediop5233]

Thank you so much you helped me a lot with my chemistry exam

[@NotNT100]

Thanks very much, this series was fantastic. I understand now.

[@dannyruiz3992]

Thank you so much for your videos they have helped me tremendously

[@veronicaroberts4296]

This is SO helpful. Thank you!

[@skywardsword10]

did u dye your hair or was blonde your haircolor naturally?
It looks great! I was just wondering :D

[@katherineweems778]

This helped me so much, thank you...I feel like professors don't explain why these are important and just give us the rules lol so I'm like why the hell are we doing this?

[@bsl17]

very very helpful. thanks so much

[@leelabisht3002]

Thanks sir for clear the concept

[@rayofsunshyne]

Thank you so much helped me with a science problem!

[@TonyandDylan]

can you do a video including dimentional analysis with significant figures?

[@captainjackson18]

yeah

[@fatinfatanah2965]

Great guru

[@a.a2234]

شكرا،،، thanks

[@elizabethwilson7219]

Well, this is what I was looking for. Have to say, Man, you are Amazing!!!!
Umm...hey Tyler I was jus thinking if you could make a few videos on 'coordination compounds'? *_* 'Cause that chapter bugs me >.

[@kylebuenaventura171]

Thanks

[@101ninjapig]

For the first problem, the answer was 25.9, but wouldn't it technically be 26. because it needs two significant figures?

[@whenshellaltema3672]

great vid man this helped alot im a subcriber

[@saikatdey3027]

Should the firstqs ans would be 25.8(according to round off rule? As the place upto which we have to round off if aster that place 5 is present and no other non zero digit is present after that to male it even! Thats how ans should be 25.8mi i think?

[@jamairaelnas8320]

omg i laughed so hard to that 14.2 number of ppl HAHAHAHAHAHA

[@51235465789]

Thx so much

[@Dollybouzi]

thank you

[@ahmedalfarsi911]

thanx

[@coryschneider5429]

Where does Multiplication and Division with Significant Zeros first one start? Like the first video of that? I don't understand you (1.6) and the others

[@kellynavarro2669]

You are so awesome!

[@dieudevil]

How about 3/14? 3 and 14 are counted, like 3 people and 14 cakes? How do i round?

[@Japansepuppy2481]

Hi I have a question! What do you do if in the question it goes from cm to cm^2 (squared)? For example(12.4 cm X 7.943 cm) +0.0064 cm^2? How would you solve this?

[@nitamac1312]

i love you man

[@umeshbhattp]

thanks !!!!!!!!!

[@jovanrodriguez7796]

should i go back and watch the rest because i skipped like 5 of your videos. i get it though

[@HosseinFitness]

thanks soooooooooooooo much

[@optimusprimo]

does anybody know of any practice videos with mixed operations? addition subraction, mult and division? THANKS!

[@bkPrabhu]

Didn’t get why it was an infinity

[@americanwar1]

Suggest me a Physics teacher like you pls .

[@AdrianGonzalez-pg2fc]

You are a GOD. Thank you so much

[@seantemplonuevo3219]

Tyler can you help me with my homework.?

[@relafen66]

Oh man Live-strong bracelets ha i remember those... if only u knew back then he was doping lol.

[@ronken14]

Help me with this please.
(8.41 X 2.873) + 4.77

[@NarutoSSj6]

+Chandler the final number between two addictions is to rounded to the least decimal of those. so 27.90

[@jennyclaire9904]

huhuhuhu! why I can't still understand it? Lol.

[@Learnandfun0801]

i wish he wasnt waisting so much paper

[@w0313440]

thank you