Multiplication and Division with Significant Zeros (1.5)

To see all my Chemistry videos, check out
socratic.org/chemistry
Now that we know when zeros are significant or not, we'll do multiplication and division and rounding with numbers that have zeros.

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I learned more from him in 4 minutes than I did from my teacher all week

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Thats sad

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Yes,me to.

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Me too

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[@nick42701]

My first 2 weeks of general chemistry, and our professor is still trying teach the class the concept of sigfigs and how to add/subtract, multiply and divide them, and you just taught me in 4 minutes. Maybe some of these college professors should take some pointers from you guys teaching these things on youtube. Once you grasp this concept, it's so simple. A lot of my professors have a tendency to over complicate them, making it hard to learn for everyone. Thank you for the videos.

[@mtfhs]

You're the BOSS Tyler, my chemistry teacher goes too fast and doesn't elaborate very much. You have clarified that so much in just a few minutes. Keep up the great work

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Thank you. These short lessons are extremely helpful, you make it very easy.

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Just started Chem and you're already helping me get off to a hopeful start. Super glad everyone is appreciating your work. I'll add myself into the crowd. Thanks, A TON!

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I never comment on video I watch on youtube, but I need to show appreciation and gratitude for your channel because I literally reference this video whenever I forget basic procedures and need a refresher.

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[@NatureHealsUs]

Thank God for you!! You really saved my life because my professor doesn't really help me much

[@tdewitt451]

@danielladilly no, i intentionally left that rule out because i hate it, and it's mathematically incorrect. i know that some teachers like to use it, but it was designed for accounting (like rounding numbers in a bank account), NOT for scientific measurements. so if you already know the rule, great! but i'm not trying to teach it here.

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I was honestly struggling in science class with these because I had no idea how they worked, and I had a test coming up on them and I was in no way prepared for it. Then I stumbled upon these amazing videos the night before and everything made sense! Thank you so much for making these! I have you to thank for my results. Thank you times infinity! :)

[@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.

[@tdewitt451]

@love4noreason usually you only put a decimal place for a number that has zeros at the end, like 230. or 4500. to show that those zeros are significant. if you have 151, since there aren't any zeros, you know that all three digits are significant. but if the answer were 150, and you wanted to show that all three digits (including the zero) were significant, then you'd put the decimal at the end. does that make sense?

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Tyler DeWitt sir ...can u upload some videos of physics !!! Your way of teaching is absolutely fantastic sir ...this time I enjoyed learning chemistry which seems to be boaring earlier...

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Thank you so much! Eight years later, your videos are still very helpful!

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Thank you Mr.DeWitt you just saved me from this semester’s chemistry class 🤓🤓. Thank you for all you do!!!!!!!!

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This was sooo helpful, my chemistry teacher just told my class to read the notes and i learned nothing from them. This video was able to teach me everything i needed. I really enjoyed the video.

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literally your videos help me so much as a student. my chemistry teacher explains it really poorly so thank you

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i go to school not having a clue what my teacher is talking about, then I come home and watch your video and I know exactly what to do. my teacher's method is trash. THANK YOU

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Trying to get through my chemistry class to start my nursing program. I think I learn more from you that my in my class or with my tutor. I cannot thank you enough!!

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Thank you SO much! I've been struggling a LOT with Chemistry and the sig fig, you made everything clear to me! Thanks (:!

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12 years later and still helping!

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your a legend you taught me this a million times better than my honors chem teacher thank you!

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I'm not going to fail my test in Chem. next period

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d did you pass?

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Lil Bozy lol we’re here at the same time

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Yup I have one next period

[@JCJAKEE]

Thanks! Just doing a refresher for college and all of your content is better then my courses.

[@tdewitt451]

Thank you SO MUCH

[@bunnychanner]

Wow! You've explained that in such a simple way!!!! THANKS :)

[@TheArhaam]

This video is a really good way of refreshing your memory and clarifying doubts when necessary! thnx a lot bro! I appreciate it!

[@MoodReaderMary]

Thank you!!! 😀 My exam is in about an hour right now and this is really helpful! 😊

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This was so helpful, my chem textbook and teacher both made it all so much more complicated than this u saved my life

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who knew a decade later i would need this

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Thanks for these videos!!! I couldn’t understand my professor all week. I easily understood you! I’m watching commercials so you can make money! (I hope) I also hope you are a professor!

[@dudestedo]

Thank you sir you are the first teacher that convince me to learn about significant figures I hate those stuff so much that it making me want to rage quit every time and the teacher keep being bs about the rounding and stuff :(

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I have a really good chem teacher. But now it's finals and I need to brush up or clearify on the things I got wrong. This video is available all the time....where the teacher is not. Thanks.

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Your explanation is very good 😊

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Wonderfully done

[@ThatDontBe]

you are a life saver man! you really made sig figs much easier to comprehend!

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The grammar of some people...no wonder they don't get sig figs. But thank you for all the help so far! You're really going to be saving me this year in chemistry!

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omg such a good professor.I learned everything

[@tdewitt451]

i talk about this in my videos called "significant figures made easy!" and "significant figures made easy 1.2" message me if you are still confused after watching them.

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I thought he dabbed at 4:23

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[@jaylee842]

Thank you so much, sir. Now it's crystal clear to me.

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I love learning off of here it helps me understand more than what my high school and college professor taught, but one question do you have to fill in Zeroes?

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i watched this video right before my chem test and i passed. Thank you so much

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thank youuuuu

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Thank you so much. You help me to understand easily them.

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you are a life saver, also a time saver. perfect, thanks a lot!!!

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Awesome, this has explained significant figures better then my professor

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this coming Oct. I'm gonna take a entrance exam. Thanks this video. I learn more.

[@joeyb649]

Please someone I don't understand why 0.021 is final answer according to sig fig rules wouldn't you say 21 is answer because any zeros to a left of a non zero number are insignificant he even says it.

[@ExplainIttoMe_1]

He is dividing 480.00 by 23,000 (twenty-three thousand), not 23.000. I think you are confusing the comma with a decimal.

[@rozminalakada6779]

thanks I really understand it now. Um, i just had a quick question. when you're rounding, do you start rounding at sig digits or just all the way at the beginning?

[@Rivertowner]

Very very helpful videos. Thanks and God Bless you Tyler!! :))

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you actually saved my chemistry grade, thanks (:

[@Taymanator0051]

Quick question, in that very last problem, would there ever be an instance where you would need to include a decimal after the 151? I guess only if there were 4 sig figs; you would just include the decimal and the 4 (151.4)?

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I wish you were my professor.....perfect explanations

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I got used to your face and I

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So easy to understand. Very very helpful ^_^ Thanks

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I learned more than him in 4 mins than i did with my chem n physics teacher in 1 hr 30 mins

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You man, are awesome!! Thanks so much for these vids!! Peace bro!!

[@shaz_jo]

Hey just an question. I have looked into other methods where after rounding up the value they replace the remaining numbers after the decimal point to zeros. Is this applicable?

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Thank you Tyler

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dude, my school needs to hire you , seriously if you need a job, all of them are available cuz none of them can freaking teach.

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thanks soo much! i understood this sooo much better than in class

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13 years ago we are stilll here thanks

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I can't thank you enough!

[@isabelsarria8590]

I got a small question um when you subract 2.496-11.86 the answer is a negative answer so could u still be able to do it even if its negative ?(sorry if you don't understand my question I'm really bad at explaining math/algebra)

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Amazing video! :)

[@-horoshilov-8272]

what happens if you have 3 * 5 = 15 ? Does this get 20? Because this seems arbitrary considering no matter what your inital eg grams are you'll be always closer to 15 than to 20.

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Great video tanx

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Omg this helped so much ! My chem teacher sucks! Thanks :)

[@rafaeldelaflor]

Should the answer always be exactly the same when you convert to scientific notation before solving for the solution and converting to scientific after you find your solution?