Scientific Notation and Their Operations

[@afinamoreASL]

I don't know who you are or why you're doing all of this for free, but THANK YOU THANK YOU THANK YOU! You are the only person who is explaining this to me in a way I can understand, and without you I'd be looking to drop out of this online Chem class I signed up for. PS your hair is legit gorgeous and on point AF. You're like the goddess of chemistry.

[@melissamaribel]

You’re very welcome Austin! And haha thanks I’m glad I could help!

[@learningteacher4846]

Absolutely the most easiest and simplest presentation of scientific notation and their operations. Thank you. You're doing an amazing job. From a teacher's perspective, you sure do meet the needs of all kinds of students. Wish more teachers taught like this. Thank you for what you're doing!

[@lusea9708]

THANK YOU Melissa Maribel, saying this does not seem like enough. You are helping me handle my anxiety over starting a week late in a chemistry class. Your practice problem sheets to accompany your videos in this series and the videos that accompany those practice problems are gold. You are a wonderfully generous person to do what you are doing and I feel more confident moving forward this semester because of you. I am trying to get into a nursing program and am a middle age college student. I really do not think I could get through this semester without this video series from you.

[@innocencyike5630]

I have watched different videos on this, but it just got clear to me. Oh my goodness you are a teaching angel. Your method of teaching with your teaching apparatus is top notch. God bless you. You got me. New subscriber here.

[@laurafernandez4812]

Thank you for this. I’m taking chemistry 2, teaching myself chemistry 1. Hopefully it goes well

[@Politickin]

Did you pass?

[@thedivinesmile7618]

Literally the easiest and simplest video I ever found ❤❤ Thanks Mam

[@sampadpanigrahi1020]

You are really doing a great job for we students😍 Thank you 👍

[@youreallywannaknowmyname1113]

I love the effort you put into your videos. Thank you for the help.

[@ARISE.FREEDOM-lq9nl]

incredible lessons & production. Thank you!

[@elenaenriquez8019]

Thank you this was explained way better than my teacher

[@mariabrown1123]

I cannot thank you enough!! This is so helpful and well explained 🤩

[@Penelope_Paris]

My son passed his exam because of your videos. Ty.

[@coolhandlou8963]

Ok wait - on the "positive exponent" example, you used 67,800. You said "move the decimal left until you get a number NOT zero". The decimal was currently AFTER the second zero (all the way right)...but then you moved it "4 spaces" to the left, or just after the 6, PASSING UP the non zero 8 and non zero 7? WHY did you not stop just after 8, the FIRST "non zero number"? This one didn't make sense to me. Otherwise THANK YOU for all you do!!!

[@coolhandlou8963]

Oh ok wait...it's the whole "only one number in front of the decimal" thing. I got it now. :)

[@Aly-Amor]

@@coolhandlou8963 I came to the comments looking for this question!! I still don't get it :( what do you mean the whole "only one number in front of the decimal" thing? sorry I just don't get it :(

[@MoreEmi]

Wait I still don’t get it - why was the decimal moved in front of the 7 and not 8?

[@Shadow222]

I’m only a min into the vid and I just want you to know Bru u saved me thank you🙏🏽

[@maanobilli9035]

I just love YOU,Your way ,your voice,colors in that video ! Everything ,just everything 😥can't explain the actual feelings Malessia ..I love you literally

[@iMaGiNaTiOnWpAsSiOn]

At 10:34, the number was 58.24 and you said there needs to be one number in front of the decimal that’s not zero so we need to move the decimal between the 5 and 8 instead of keeping it 58.24. I am confused because there are not only one but two numbers in front of the decimal that are not zero. What am I misunderstanding? Thank you so much btw for all your help!!!!

[@des5634]

I'm still confused about your same question. Did you get your answer by chance?

[@googleuser7945]

Lovely. Not exactly for maths beginners, but if you know how to work your powers, this is perfect

[@cobrakairobloxenthusiast4291]

I have just learned this and mastered this in my 8th Grade math class trust me it’s really simple!

[@jasmailchahal8334]

Really very helpful video ..... 😊👍

[@sunitaghaznawi8251]

You are the best teacher thank you so much.❤️❤️❤️😍😍😍😍😍😍✅✅✅

[@carmonb4333]

omg thank you so much!!! i knew none of this nor did my teacher explain it and i have a test smh

[@Hnnnnnnne]

Thank you so much for making these!!!!

[@christianpatao7320]

You said that when dividing the same base we should subtract why did u add on 7:56 I'm getting confused

[@zaidarios833]

Thanks a lot 🙏 love your channel ❤️

[@evelynlucchesi2274]

Hi Melissa. First of all, thank you so much for sharing your knowledge. I appreciate you. You really help relieve stress. I didn't see a video on how to calculate a problem when there's only a base and exponent on one side of the problem. For example, 1113.0-6.6 x 10^2. Do I multiply 1113.0 and 6.6 first, then bring down the 10^2, or do I create a base for 1113.0 first by moving over that decimal? Thank you so much!

[@OyenShadrack]

Thanks for yoo commitment

[@kathryn3318]

In the example 67,800 why not stop at 8?

[@Juliaaboni]

Hi! I think it's because it wouldn't be proper scientific notation. We only want one nonzero number in front of the decimal :)

[@melissamaribel]

Exactly what Julia said, always refer to template shown at 0:21 there can only be one nonzero number in front of the decimal.

[@oofus7704]

This was helpful thank you

[@shazaibsyed6675]

loved it

[@secret650]

Hi! At 6:45 is that the final answer? Shouldn't we simply 10 raised to 15?

[@gabgab8691]

HI Melissa! If you happen to see this : On the practice problems for this video, #4d, why is the final answer 7.15x10^-2 and not rounded to 7.2x10^-2 ? Thanks! Also, is there a better place for you to ask questions rather than on videos?

[@gabgab8691]

I just re-watched this video and saw the same thing happen for the problem : 5.21 x 10^3 + 6.14 x 10^2 For these problems, at the end, are we not supposed to round to least decimal (for add. and sub.) or least amount of sig figs (for multi. and div,) ? Any information would be greatly appreciated as I am just a bit confused. Thanks so much!

[@teckittalin4524]

YOU ARE SO AMAZING THANK YOU SM!!

[@starstar6008]

It would be best if you add notes about photo electrons 😄🙏

[@veronicaarroyotorres9056]

THANKS!!!

[@nayelymoya9142]

When converting a number with a decimal point in the middle EX. 745.68 to scientific notation would the exponent be counted from where it was or from the right end like with non decimal numbers EX. 74,568 ?

[@nothingyeteverything6174]

from where it was. we count it from the end in non decimal numbers because they are non decimal and we have to have a decimal and move it around to convert the number is into scientific notation and as a basic rule, we know that every non decimal number has a decimal at it's end ( if we ever need it, we mention it and use it... otherwise, we don't).

[@trishaawate4030]

*We move the decimal from where it was:* 745.68 and 74,568 are two completely different numbers with decimal points placed differently. Even if it isn't written; 74,568 is actually written as 74,568.000...(zeros go on infinitely) in decimal form. Every non decimal number has a decimal at its end. Example: * 74,568 x 10^-2 = 745.68 (decimal moved to the left from the right end) * 745.68 x 10^-2 = 7.4568 (decimal moved from where it was)

[@chryzelleann1723]

THANKK YOUUU 😭😭❤❤

[@christophersanchez8678]

I'm so mad you make it so easy😂thank youuu🤍

[@Penelope_Paris]

Ty

[@paulinamedina6810]

what is the link for the practice problems answers?

[@melissamaribel]

Here's the link: melissa.help/practice

[@jaymxoxo]

what happens when your answer needs to be in scientific notation? for ex: i have 3 x 10^6. I want to add a ".0" after the 3. Will the exponent 6 become 5? or 7? Is this even a valid question? lol

[@melissamaribel]

3 x 10^6 is already in scientific notation.

[@naytun9712]

Hi thank u so much and can u help me about lines in the coordinate plane please 😅

[@yapperisaa]

uhm why am I the only person here thats supposed to learn this in the 7th grade?. ANYWAYS- YOUR TUTORIAL REALLY HELPED MEEEEE I HAVE A MATH TEST TOMORROW AND I AM FINALLY CONFIDENt :DDD

[@ronomon_]

Nah ur not alone

[@teckittalin4524]

I need help on the division one.. my answers seem wronggg

[@esmeraldaramirez1428]

THANK YOU

[@swathireddy8103]

Where are you from mam

[@lucyscanzusolucy1161]

ㅗ

[@lucyscanzusolucy1161]

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