Adding and Subtracting Fractions

Adding Fractions

100

1/4 + 2/4 

What is 3/4?

200

3/8 + 4/8

What is 7/8?

300

1/3 + 3/5

14/15

400

5/8 + 1/5

33/40

500

3/4 + 1/3

13/12 or 1 1/12

Subtracting Fractions

100

5/6 - 1/6

What is 4/6 or 2/3?

200

2/3 -1/3

What is 1/3?

300

5/7 - 2/3

1/21

400

2/3-3/8

7/24

500

2/3 - 1/6

9/18 or 1/2

Finding the 1st 5 Multiplies

100

2

2, 4, 6, 8, 10

200

3

3,6,9,12,15

300

4

4,8,12,16,20

400

7

7, 14, 21,28, 35

500

9

9, 18, 27, 36, 45

Adding Mixed Numbers

100

2 1/4      +      3 1/3

5 7/12

200

7 1/7      +      1 1/4

8 11/28

300

4 1/2      +       2 1/5

6 7/10

400

6 1/3       +        3 1/6

9 9/18 or 9 1/2

500

6 1/8  +  5 1/3

11 11/24

Subtracting Mixed Numbers

100

6 1/3       -     3 1/12

3 3/12 or 3 1/4

200

4 2/3      -      3 2/5

1 4/5

300

11 5/6       -        5 1/2

6 2/6  or 6 1/3

400

3 2/7      -      3 1/14

3/14

500

10 1/3      -       4 4/21

6 3/21 or 6 1/7