Simplifying Fractions Before Multiplying

Big Idea:

By simplifying fractions before multiplying, we make the multiplication easer and leave the answer in its simplest form. Some people refer to this as pre-reducing, cross-reducing, or canceling. Whatever you call it, it’s a shortcut.

Simplifying Fractions Before Multiplying

Remember:

You can save time and effort by simplifying fractions before multiplying.

Step 1. Take all the mixed numbers and make them improper fractions.
Step 2. Find one numerator and one denominator with a common factor.
Step 3. Divide these numbers by their common factor.
Step 4. Repeat the process if there are other numerators and denominators with a common factor.
Step 5. Multiply across.