If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

## Arithmetic

### Course: Arithmetic>Unit 15

Lesson 2: Dividing unit fractions by whole number

# Visually dividing unit fraction by a whole number

Sal uses area models and number lines to divide unit fractions by whole numbers.

## Want to join the conversation?

• i cant understand the topic
• To divide a unit fraction by a whole number:

1) Write 1 in the numerator.

2) Write the product of the unit fraction’s denominator and the whole number, for the new denominator.

Example: let’s divide 1/5 by 8.

The numerator is 1.
The new denominator is 5 x 8 = 40.

Have a blessed, wonderful day!
• How would you show it on a number line, though?
• you take the reciprocal of 3/1 which is 1/3 and then you would do 1/3 x 1/5 and get 1/15 and then you take the denominator and put the denominator as the total number of points and split it into 3 groups of 5.
(1 vote)
• it is still hard to do
• JUST KEEP TRYING! That's all I have to say.
• i'll be honest i dont like khan upvote if you agree and comment why u dont like it if you agree
• this is kinda hard. is it to you?
• It's not super hard once you understand it.
• bro once you see this comment you go extinct💀
• bruv shut the front door