Adding, Subtracting, Multiplying & Dividing Fractions

Adding Fractions

100

To add fractions, you have to change the fraction so that the denominators are the same, meaning they have a _______ denominator.

Common

200

5/8 + 2/8

7/8

300

4/9 + 7/9 (change to mixed number)

1 2/9

400

3 1/2 + 2 1/2

6

500

5 1/4 + 5 1/3

10 7/12

Subtracting Fractions

100

3/4- 2/4

1/4

200

2 1/2 - 1 1/2

1

300

12/18- 9/19 (Reduce)

1/6

400

4 1/3- 2 1/3

2

500

5 3/5 - 2 1/5

3 2/5

Multiplying Fractions

100

1/2 x 1/2

1/4

200

5/8 x 2/3 (reduce)

5/12

300

Estimate 12/18 x 3/6

1/2

400

Estimate 8 12/18 x 2 1/8

18

500

2 2/5 x 3 4/5 (reduce)

9 3/25

Dividing Fractions

100

Divide 3 by 1/4

12

200

4 divided by 2/3

What is 6

300

2/7 divided 7

What is 2/49

400

Divide 3 by 1/2

6

500

Divide 2/3 by 3

2/9

Equivalent Fractions

100

What is an equivalent fraction?

A fraction that is equal or similar to another fraction.

200

How do you make an equivalent fraction?

By multiplying OR dividing

300

Create an equivalent fraction to 2/3

Answers may vary: Ex: 4/6

400

Create an equivalent fraction to 5/15

Answers may vary: Ex: 3/5

500

Create an equivalent fraction to 3/8.

Answers may vary. Ex: 6/16