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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

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Step 1Multiplying whole numbers

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

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4 comments

Jan 19, 2012. 2:41 PMdolphinlms says:

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.

Jun 18, 2009. 8:02 PMsciencefreak101 says:

wow, education is very important !!

Dec 15, 2010. 9:11 AMMROHM says:

I'm WITH YOU ON THIS ONE!!! EDUCATION IS LIKE PIZZA !!! YOU CAN'T GET ENOUGH!!!

Feb 10, 2009. 5:15 PMcutting Matt says:

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)