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## 5th grade

# Decimals in written form (hundredths)

CCSS.Math: ,

To write a decimal in word form, start by writing out the whole number portion. Next, express the decimal portion as a fraction of hundredths. For clarity, it's often helpful to simplify multiple terms (such as "one tenth and five hundredths") into a single fraction (such as "fifteen hundredths"). Created by Sal Khan and Monterey Institute for Technology and Education.

## Want to join the conversation?

- when the guy wrote 63.15 in word form, he said: sixty-three and fifteen hundredths. Though I'm not saying he's wrong or anything, but instead of saying "and" do you say "point"? So sixty-three point fifteen hundredths?(2 votes)
- I say point but my teacher said say and(9 votes)

- word form, and I'm not saying it out loud because that would give the answer away. We have 63.15 that we want to write in word form. Well, the stuff to the left of the decimal point is pretty straightforward. Let me actually color code it. So we have 6, 3. Let me do it all in different colors. And then we have a decimal, and then we have a 1 and a 5. There's one common way of doing this, but we'll talk about the different ways you could express this as a word. But we know how to write this stuff to the left. This is pretty straightforward. This is just sixty-three. Let me write that down. So this is sixty-three. And instead of the decimal, we'll write, and. Now there's two ways to go here. We could say, and one tenth and five hundredths, or we could just say, look, this is fifteen hundredths. One tenth is ten hundredths. So one tenth and five hundredths is fifteen hundredths. So maybe I can write it like this: sixty-three and fifteen hundredths. Just like that. Now, it might have been a little bit more natural to say, how come I don't say one tenth and then five hundredths? And you could, but that would just make it a little bit harder for someone's brain to process it when you say it. So it could have been sixty-three-- so let me copy and paste that. It could be sixty-three and, and then you would write, one tenth for this digit right there, and five hundredths. Sixty-three and one tenth and five hundredths is hard for most people's brains to process. But if you say, fifteen hundredths, people get what you're saying. Not to beat a dead horse, but this right here, this is 1/10 right here and then this is 5/100, 5 over 100. But if you were to add these two, If you were to add 1/10 plus 5/100 -- so let's do that. If you were to add 1/10 plus 5/100, how would you do it? You need a common denominator. 100 is divisible by both 10 and 100, so multiply both the numerator and denominator of this character by 10. You get 10 on the top and 100 on the bottom. 1/10 is the same thing as 10 over 100. 10/100 plus 5/100 is equal to 15 over 100, so this piece right here is equal to 15/100. And that's why we say sixty-three and fifteen hundredths.

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Video on YouTube🥲(7 votes) - whats a good way to rember to go like 10 over 100 after the decimal?

(2 votes)- I always remember by thinking of everything to the right of the decimal as the same thing as the normal place values, except skipping the "ones" place and going in the other direction.(2 votes)

- is it only me or is it been 11 years since this vid came out(5 votes)
- Nope, not you :)

Some of these videos are very old :)(3 votes)

- How would you say .3333 repeated? Would you just round it to .33?(5 votes)
- I can't type it out so I created a program to show you

https://www.khanacademy.org/cs/how-to-write-a-repeating-decimal/5633092141187072(2 votes)

- I need help on dividing decimals and fractions.(2 votes)
- Well, I know how to divide fractions. With practice it is simple!

Here is an example:

5/6 divided by 2/5

First, you have to flip the second fraction. So now the second fraction is 5/2 ( which by the way is a improper fraction). Now you turn the division sign into a multiplication sign. So now the equation is 5/6 times 5/2. And now you just multiply the fractions like any other problem and BOOM! you got it. By the way the answer is 25/12 or, simplified, 2 1/12(2 votes)

- why do you say tenths and hundredths instead of point somthing?

example:

five and fifty three hundreds v.s five point fifty three(3 votes)- The "point" way of saying is is a short-cut way. It's still right but it doesn't help new students learn what the place values mean and it doesn't help those students see that decimals and fractions are the same thing.

For example:

five point three six

OR

five and thirty-six hundreths.

Both are correct but it's easy to see that the second one is not only 5.36, it's also the same as 5 36/100(3 votes)

- Maybe you can say 5.5 like this: five point five

PS: thank you for being the best(3 votes)- Yes, you can say five point five

Other ways are to say five and five tenths or five and a half.(2 votes)

- So at0:03to 0.06

what did it mean that you would give away the answer ? How would you give away the answer if you haven't even write it in word from yet?>(1 vote)- If you say the decimal, you are pretty much saying it in word form. Because here is an example,

1.89

if you read that aloud, it would sound like,

One and eighty-nine hundreths.(3 votes)

## Video transcript

We're asked to write this right
here in word form, and I'm not saying it out loud
because that would give the answer away. We have 63.15 that we want
to write in word form. Well, the stuff to the left of
the decimal point is pretty straightforward. Let me actually color code it. So we have 6, 3. Let me do it all in
different colors. And then we have a decimal, and
then we have a 1 and a 5. There's one common way of doing
this, but we'll talk about the different ways you
could express this as a word. But we know how to write
this stuff to the left. This is pretty straightforward. This is just sixty-three. Let me write that down. So this is sixty-three. And instead of the decimal,
we'll write, and. Now there's two ways
to go here. We could say, and one tenth
and five hundredths, or we could just say, look, this
is fifteen hundredths. One tenth is ten hundredths. So one tenth and five hundredths
is fifteen hundredths. So maybe I can write it like
this: sixty-three and fifteen hundredths. Just like that. Now, it might have been a little
bit more natural to say, how come I don't say
one tenth and then five hundredths? And you could, but that would
just make it a little bit harder for someone's brain to
process it when you say it. So it could have been
sixty-three-- so let me copy and paste that. It could be sixty-three and, and
then you would write, one tenth for this digit right
there, and five hundredths. Sixty-three and one tenth and
five hundredths is hard for most people's brains
to process. But if you say, fifteen
hundredths, people get what you're saying. Not to beat a dead horse, but
this right here, this is 1/10 right here and then this
is 5/100, 5 over 100. But if you were to add these
two, If you were to add 1/10 plus 5/100 -- so
let's do that. If you were to add 1/10 plus
5/100, how would you do it? You need a common denominator. 100 is divisible by both 10 and
100, so multiply both the numerator and denominator
of this character by 10. You get 10 on the top and
100 on the bottom. 1/10 is the same thing
as 10 over 100. 10/100 plus 5/100 is equal to
15 over 100, so this piece right here is equal to 15/100. And that's why we say
sixty-three and fifteen hundredths.