Main content

## 5th grade

### Course: 5th grade > Unit 9

Lesson 3: Divide decimals by whole numbers# Dividing a decimal by a whole number example

CCSS.Math:

.

## Want to join the conversation?

- *
*Why are so many people confused?** Anyway, the concept is simple. So, 1.86 in 1.86 ÷ 2 can be written as 186 hundredths (**hundredths is the smallest place value**). Now, you'll just divide 186 and 2 and get 93. Since we wrote 1.86 as 186 hundredths, we'll write 93 as 0.93. It's simple.

*Note: I put this here because there's a lot of confusion(29 votes)- NO NEED TO BE RUDE BrUh(0 votes)

- Can you explain in a different way(12 votes)
- 1.86 = 186 hundredths

Divide 186 by 2. Result is 93. Remember we are dividing hundredths. So your quotient is 0.93.(9 votes)

- Can you vote this up?

Goal: > 250(11 votes) *italics*It doesnt explain the math im doing its like this:**bold*3.64÷7= hundredths÷7**3.64÷7=

*bold*3.64÷7= hundredths

*bold(8 votes)- First of all, to get bold words, you wrap them around *. . .* The dotts I added to indicate the words/phrases. Italic or slanted phrases/words need to be wrapped around like:
*. . .*

Coming to the point, if you write 3.64 in hundredths, it would be 364 hundredths, and you do 364 ÷ 7 = 52

Since you wrote 364 in hundredths, so do you for 52 (0.52). So 3.64 ÷ 7 is 0.52.

HOPE THE EXPLANATION ABOUT FORMATING AND MATH HELPED!(5 votes)

- can you explain it more please(7 votes)
- i am soo confused pls help me TYSM^^(7 votes)
- how would you divide 16.8 divided by 8?(5 votes)
- Since 168 is 160+8, 168 divided by 8 is 20+1, or 21.

Because 16.8 is 1/10 of 168, 16.8 divided by 8 is 1/10 of 21, which is 2.1. The answer is 2.1.

Have a blessed, wonderful day!(6 votes)

- what if you get a remainder im so confused i watched this 5 timed and im still not understanding(6 votes)
- At0:56, Sal says 186 hundredths hundredths. Does that mean anything, or is it a mistake?(7 votes)
- It’s not a mistake because that’s what we need for the answer(0 votes)

- im sorry

i am curently out of burrito,s(4 votes)- what about tacos or supas(3 votes)

## Video transcript

- [Instructor] Let's see if we can compute what 1.86 divided by two is. And like always pause this
video and have a go at it. And I'll give you a hint,
see if you can think about 1.86 as a certain
number of hundredths, and then divide that by two. All right now let's work
through it together. So as promised, let's see if we can think of 1.86 as a certain
number of hundredths. So if we go to the hundredths place, we only see six there, but we could view 8/10 as 80 hundredths. So you could view the
.86 as 86 hundredths, and each one is 100
hundredths, so we really have 186 hundredths. So this number right over here I'm going to rewrite as 186 hundredths, hundredths. And that is what we need to divide by two. Now, if you're dividing
186 of something by two, well it's just gonna be 186 divided by two of that something. So we could rewrite this
as 186 divided by two, and then that's the number of hundredths this is going to be, so I'll
put that in parenthesis. So it's going to be that
many hundredths, hundredths. All right, so what is 186 divided by two? Some of you might be able
to do it in your head, some of you might wanna use some paper. The way I like to think
about it is if I were to take the six ones and divide it by two, well that's going to be three ones. And then if I were to take the 18 tens and divided by two, that's
going to be nine tens, so that gets us to 93. Now you could've also
thought about it like this, you could've said, how many times does two go into 186? Let's see, it doesn't go into one, how many times does it go into 18? Nine times, nine times two is 18, we could subtract, and then you have zero, you bring down that six. Two goes into six three
times, three times two is six. You subtract and you get no remainders. So either way you're going to get 93. And it's 93 what? Well it's 93 hundredths, is
what we're talking about. 93 hundredths. And now we just wanna
express 93 hundredths as a decimal. Well how do we do that? Well that's gonna be 0 point. The 90 hundredths is
the same thing as 9/10, and then the three hundredths,
is of course 300 hundredths. Three in the hundredths place. So it's 0.93, and so we
can write it up here. This is going to be equal to 0.93, and we're done!