Show:
Fraction Rules
Multiplying Fractions
Dividing Fractions
Surprise
100

What needs to be the same when you add and subtract fractions?

The denominator

100

2/3 * 4/5

8/15

100

What is the reciprocal of 

11/8

8/11

100
What are the steps for multiplying fractions?

Multiply straight across (multiply numerators and multiply denominators)

200

How do we change a whole number into a fraction?

Put a 1 in the denominator, or put it over 1.

200

3/5 * 7/8

21/40

200

3/8 -: 2/3

9/16

200

Find the reciprocal of 14

1/14

300

3 word phrase to help us with dividing fractions.

Keep - Change - Flip

300

4 * 7/8

7/2 or 3 1/2

300

6 -: 5/8

48/5 or 9 3/5

400

When dividing fractions, you are changing into ______________________  fractions?

multiplying

400
It took Jason 2  5/6 hours to drive to the beach. It took Mary twice as long. How long did it take Mary to drive to the beach?

17/3 or 5 2/3

400

1/2 -: 5/8

4/5

500

What should you do first to mixed numbers when multiplying or dividing fractions?

Convert them to improper fractions.

Change them to improper fractions.

Make them improper fractionns.

500

2/9 * 3/8

1/12

500

3/8 -: 7/12

9/14