Fraction Rules
Multiplying Fractions
Multiplying Mixed Numbers
Dividing Fractions
Dividing Mixed Numbers
100

When dividing which value always comes first?

(Total, Number, Size)

Total
100

2/3 * 4/5

8/15

100

1 1/2 * 5

15/2 or 7 1/2

100

What is the reciprocal of

11/8

8/11

100

What is the reciprocal of

2 1/12

12/25

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

5/6 * 1 1/3

10/9 or 1 1/9

200

3/8 -: 2/3

9/16

200

2 1/8 -: 3

17/24

300

3 word phrase to help us with dividing fractions.

Keep - Change - Flip

300

4 * 7/8

7/2 or 3 1/2

300

3 1/3 * 1/4

5/6

300

6 -: 5/8

48/5 or 9 3/5

300

1 1/8 -: 1/10

45/4 or 11 1/4

400

When dividing fractions, you are changing ________ into ___________.

division into multiplication

400

5/12 * 9

15/4 or 3 3/4

400

1 1/3 * 2 1/8

17/6 or 2 5/6

400

1/2 -: 5/8

4/5

400

3 1/4 -: 1 1/2

13/6 or 2 1/6

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

2 2/3 * 5 1/4

14

500

3/8 -: 7/12

9/14

500

3 1/2 -: 5 2/3

21/34

Click to zoom