Multiplying and Dividing Fractions Review

Fraction Rules

100

What step  is used to simplify fractions when multiplying or dividing?

Divide by a common factor

200

How do we change a whole number into a fraction?

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

300

Do we use reciprocals when multiplying OR dividing fractions?

Dividing Fractions

400

When multiplying mixed numbers, what two strategies could you use?

Area Model and Making Improper Fractions

500

Write your own fraction multiplication problem that shows Cross Simplification.

Answers may vary. 

Multiplying Fractions

100

2/3 * 4/5

8/15

200

3/5 * 7/8

21/40

300

2 x 2/68

1/17

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

7 1/2

200

3 2/5 *  1/7

1/2

300

1 1/3 * 1 1/4

1 2/3 

400

2 1/3 * 5 1/4

12 1/4

500

2 2/3 *  1/4

2/3

Dividing Fractions

100

What is the reciprocal of 

11/8

8/11

200

1/8 -: 3

1/24

300

6 -: 1/8

48

400

1/2 -: 5

1/10

500

1/12 -: 3

1/36

Adding/ Subtracting Fractions

100

2/5 + 4/5

1 1/5

200

2/3 - (1/6)

1/2

300

4/10 + (2/5)

4/5

400

6/7 + 1 5/7

2 4/7

500

5 1/4 - 7/8

4 3/8