We’re asked to multiply 32.12,

or 32 and 12 hundredths, times 0.5, or just 5 tenths. Now when you multiply decimals,

you multiply them the exact same way you would

multiply whole numbers, and then you count the number of

spaces behind the decimal you have in your two numbers you’re

multiplying, and you’re going to have that many spaces

in your product. Let me show you what

I’m talking about. So let’s just multiply

these two characters. So we have 32.12 times 0.5. And when you write them out, you

can just push both of them all the way to the right. You could almost ignore

the decimal. Right now, you should write the

decimal where they belong, but you can almost pretend that

this is 3,212 times 5, and then we’ll worry about

the decimals in a second. So let’s get started. So if we were just multiplying

5 times 3,212, we would say, well, 5 times 2 is 10. Regroup the 1. 5 times 1 is 5, plus 1 is 6. 5 times 2 is 10. Regroup the 1. And then finally, you have 5

times 3 is 15, plus 1 is 16. And then we don’t have

any other places. If we were just doing this as

05, we wouldn’t multiply 0 times this whole thing. We would just get 0 anyway. So just 5 times 3,212 gives

us this number. But now we want to care

about the decimals. We just have to count the total

number of spaces or places we have behind the

decimal point in the two numbers we’re multiplying. So we have one, two, three

spaces, or three numbers, to the right of the decimals in

the two numbers that we’re multiplying. So we need that many numbers to

the right of the decimal in our answer. So we go one, two, three, put

the decimal right over there. So 32.12 times 0.5 is 16.060. And this trailing zero right

here we can ignore, because it’s really not adding any

information there. So we could just write

this as 16.06. The last thing you want to do

is just make sure that this makes sense. You have a number that’s

almost 32, and we’re multiplying it by 0.5. Remember, 0.5 is the same thing

as 5 over 10, which is the same thing as 1/2. So we’re really multiplying

32.12 times 1/2. We’re trying to figure out what

one half of 32.12 is. And half of 32 is 16, and half

of 0.12 0.06, so this makes complete sense.

what

Why do I not get any math????

Thanks

I was working on homework and I need to reresh on multiplying decimals thx khan academic!

thank you

that didnt change ANYTHING i knew about math. infact i know nothing about math. im only in 5th grade

i don't get this

HA! im in 3rd grade and im learning this

I am better than all of you i am in 9th grade (jk)

this i hope will help me, cause last year when i was in 5th grade, i was absent the day we were learning about this and no one ever told me how, and in 6th grade (2/2/2017) we were doing multiplying decimals bingo. since i had no absolute knowledge of this, im praying this will help. so im putting it on loop and listening to it for an hour.

Thank you This helped me a lot. I'm in fifth grade.

thaks

thanks*

i did not watch is the answer 160.6 khan academy and answer it?

Godly

thank you sensei you make life easier by explaining math in the most simple way

hiiii

I already knew how to multiply decimals but I had to do watch it.

I thought this would be hard but the way he explained it makes SUPPER easy

OMG I GET IT NOW

Thank you very helpful!

khan academy is pretty cool thank you

I hate comments that beg for likes

Like if you agree -:(

Good job of explaining to the kiddos!! Sweet and simple!

This is 56% why I am passing math. RIP me I'm doomed. ;-(

I'm in 7th grade just forgot how to do it 😂😂😂

I'm am/2017

anything times0.5 is like dividing it in half

Im watching this 2017 and it helps me in 6th grade

I hate you you stink

sorry

Subscribe to Itz_yer_boi? plz i need it yes thats wat its called

thank you know i get it

I am a kid sooooooooo,YAY!!!!!!!!

this relay helps me do do math

Did it bother anyone else that he didn't put a dot under 0?

So does that mean when your counting the number of spaces behind your product, the zero never counts?

This is simply didactic instruction and has no element of learning. People who tack in are actually self selecting……they actively WANT to know. This is boring teaching as it has always been done.

Why have it all the way over there? Is it possible to put it in the right place?

My teacher made me go to video that told me stuff I already knew. 5th grade. What it's like.

interesting…

helps a lot in 5th grade thx

thank you this really helped

Thank you so much for this! This actually helped me with my Homework! THANK YOU SO MUCH! 😉😃

I don't get it.😕😕

thank you.

someone reply to this comment in 5 yrs

when you dont know simple math and youre too afraid to ask, you come to khan academy

Thanks you l am a kid

Simple but gold. Thanks 🙂

Thx for the help

so i have this problem, i am trying to find out this lmao, but a different version, i have 7.9 x 3, for example i do need some help.. haha

My teacher brought me here.

Thank u sooo munch khan academy

Me Before:

OMG THIS IS SO HARD! UGH!Me Watching:

Hmmm…Ima try my problem again, maybe this time I'll get it..Me After:

OMG I GOT IT! YES! FINALLY!I always use the calculator, but my teacher always tells us to

SHOWour work, and I usually did that. This time I used the calculator first and then I couldn't get it. xd Thank you so much Khan Academy!I am missing years worth of knowledge in math

this is so helpful. I have a quiz in the morning, in my 6th grade math class, and now I know what to do. thank you

2018?

Already 7th Grade, suddenly forgot about decimal multiplication… Thanks

Ducc succ

Thanks I'm in 5th grade and I got a test on it tommorow

didn't help at all -_-

I am in 5th grade

Thx

Thanks so much.

Thank you, you saved my life. I'm probably gonna pass the 6th grade now. All I need is one F to fail, so I really gotta try this year.

thx for your help

Am how to make a 0.73 and 0.4 what is the answer

thx it helped alot

Thank you, this video helped me a lot. I can now easily multiply decimals😃

it helps

Great!

i actually got it

yay I'm not going to fail this test now that you

what holdup…………………..oh now I see the problem . I forgot to end it off with explained it to me

:^)

40×0.000002=????….please sir solve this

thank you so much for this. i’m in 6th grade and decimals are so hard. my teacher is the worst teacher ever but this is very helpful

You are actually RIGHT

hi your not from the future he posted this thing 8 years ago

Bruh I watched this video because half the time I and my 5th grade class ask my teacher DO YOU EVEN ENGLISH WOMAN???

Someone in 2019?

Thank you Khan Academy!! 😭😭😭 I’m 23 years old and have NEVER been strong at math, and all my teachers growing up in school here in California never wanted to take the time and REALLY TEACH ME, One on One so I grew up with a HUGE insecurity and fear of math. But that’s negatively affected my job hunt and now I’m on the prowl to re-learn what I didn’t understand growing up, and you guys are FANTASTIC!!! Thank you again! Keep up the amazing work 😊😘🤩👏🏾

this was so helpful thanks so much😃

Thx a lot helped me in a test

and the vid was short perfect

Sal is the best at explaining thanks

Im learning about this

This helped me a lot! Thanks!🌸🌸🌸

My mum made me do homework so I picked a short useful vid LOL 🙂

Who's here before exams?

you forgot to line the decimals

thanks alot khan! i will forever be in debt with you for your service to me!

I’m goin in sixth grade and just remembering how to do this stuff

I'm in 6th grade and my teacher doesn't explain it just shows it and that's it so thank you

Pure gold for 7th graders

im in 7th grade and i still learn this OMG i hope i learn from this ps.im at the beggining of the vid

This is my homework my teacher gave me

Great! I have a meth test tomorrow so this really helped😄💯💯💯📵

Math

you re wrong