Multiplying and dividing by powers of 10

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Multiplying and dividing by powers of 10

[tomasgutierrez]

Thank you so much, like I have a test tomorrow I get good grades in math, my last math test score was 97% 40/41 and my dad said on the next test which is tomorrow if I get a 100% he will get me a new phone! You just made my confidence boost up and I appreciate it I will say my score once I get it tomorrow!

[violetgirasole]

Anyone else here bcuz of school?

edit: wow i actually got some likes on this comment

[huzzaypaywand]

khan academy is the best thing i came across for maths, now i be rocking my tests.

[leahchen]

Hello guys it’s Leah and we are watching this video cause of math homework





Yesterday

[lilahrose]

Does anyone else love his mouse shape thing?

Just me?

[seigeignacio]

the movement of the arrows are confusing. it should be the other way around.

[juveriamsn]

O MY GOD . This guy is so amazing. Thank you so much for this amazing trick!

[NarendraBhushan]

At 2:57, Sal said the 3/10 is going to shift 2 places to the left, but he meant shift 3 places.

[shariefsamee]

Sir I have a doubt can u multiply 3.16 ×10 to the power of -2

[dylan-kcbx]

anyone watching this every day because you don’t understand it?

[ic]

He moves the numbers instead of the decimal which was the way I was taught.

[amberlee]

Great but what about negative exponents?

[cbougie-]

How does he have 5M but has 141 likes
Who knows

[thatoneswiftie]

Is it just me or did he make the decimal multiplication more confusing? 🤔 when moving the digits in the decimal multiplication, an easier way is to just move the decimal point towards the right. for example 2.3 x 100 their are 2 zeros in the 100 so you move the decimal point 2 times towards the right which leaves you with 230.

[AdamSchade-School]

Sort of helpful, you used decimals and not whole numbers.

[Igkkkog]

Only reason I’m here because of school

[graceting]

my teacher let me watch this boring math that i hate

[lunaavadoesmusic]

anyone else here because of a test in a day or two? I can't this dumb test off my mind!

[brooklynboss]

thanks cause i will get pizza delivered at my house if I get 100% because I am in top 7 of my class points and i will be top 2 if i pass