# Multiplying Fractions

How to multiply fractions!
This instructable is an entry to the Burning Questions Round 6.5 contest.
The fraction images were generated using this site

## Step 1: Multiplying whole numbers

To whole numbers we simply do this: (See image)
AlliP11 months ago

how do you multiply them if neither number can go into each other when cross reducing, would you just keep the same number?

dolphinlms3 years ago
This could have been cross cancelled two more times. The 9 & 3 (either denominator!) could be cross cancelled so you would have either 3/1 x 7/3 = 1/1 x 7/1 = 7 OR 3/3 x 7/1 = 1 x 7 = 7. I review this with 6th graders by writing a ridiculously long multiplication problem to demonstrate how much you can simplify a problem.
sciencefreak1016 years ago
wow, education is very important !!
4 years ago
I'm WITH YOU ON THIS ONE!!! EDUCATION IS LIKE PIZZA !!! YOU CAN'T GET ENOUGH!!!
cutting Matt6 years ago
but i think you can cancel from the top and the bottom of the same fraction because it is just the same thing as a diagonal (it's one of the properties of multiplication)