Multiplying and Dividing Fractions Review

Fraction Rules

100

How do we multiply fractions?

STRAIGHT ACROSS

200

How do we change a whole number into a fraction?

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

300

WHAT DO WE DO WHEN WE DIVIDE FRACTIONS?!?!?!

Keep - Change - Flip

400

When we do keep, change, flip-what do we change?

The division sign to multiplication

500

What is a fraction?

Part of a whole

Multiplying Fractions

100

2/3 * 4/5

8/15

200

3/5 * 7/8

21/40

300

4 * 7/8

7/2 or 3 1/2

400

5/12 * 9

15/4 or 3 3/4

500

2/9 * 3/8

1/12

Multiplying Mixed Numbers

100

1 1/2 * 5

15/2 or 7 1/2

200

5/6 * 1 1/3

10/9 or 1 1/9

300

3 1/3 * 1/4

5/6

400

1 1/3 * 2 1/8

17/6 or 2 5/6

500

2 2/3 * 5 1/4

14

Dividing Fractions

100

2/5 -: 2/3

3/5

200

3/8 -: 2/3

9/16

300

6 -: 5/8

48/5 or 9 3/5

400

1/2 -: 5/8

4/5

500

3/8 -: 7/12

9/14

Dividing Mixed Numbers

100

Convery this to an improper fraction and then flip:

2 1/12

12/25

200

2 1/8 -: 3

17/24

300

1 1/8 -: 1/10

45/4 or 11 1/4

400

3 1/4 -: 1 1/2

13/6 or 2 1/6

500

3 1/2 -: 5 2/3

21/34