Multiplying and Dividing Fractions Review

Fraction Rules

100

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

What is pull out common factor or LCF.

200

How do we change a whole number into a fraction?

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

300

3 word phrase to help us with dividing fractions.

Keep - Change - Flip

400

When dividing fractions, the change step changes into what?

What is multiplying or multiplication?

500

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

Convert/ change them to improper fractions.

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

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)

5/6

300

4/10 + (-2/5)

0

400

6/7 - 12

-11 1/7

500

5 1/4 - 7/8

4 3/8