Adding and Subtracting Fractions

Adding Fractions 1

100

1/4+1/4

2/4 or 1/2

200

2/8+3/8

5/8

300

1/7+3/7

4/7

400

2/6+3/6

5/6

500

5/12+5/12

10/12 or 5/6

Adding Fractions 2

100

3/8+2/8

5/8

200

1/16+9/16

10/16

300

7/18+3/18

10/18

400

6/13+4/13

9/13

500

5/23+12/23

17/23

Subtracitng Fractions

100

3/4-1/4

2/4 or 1/2

200

3/8-1/8

2/8

300

12/13-10/13

2/13

400

6/7-3/7

3/7

500

6/14-2/14

4/14

Subtracting Fractions 2

100

14/20-7/20

7/20

200

13/16-6/16

7/16

300

21/25-14/25

7/25

400

13/15-10/15

3/15

500

6/21-5/21

1/21

Add/Sub unlike denominator

100

2/8+1/4

2/4 or 1/2 or 4/8

200

3/10+2/5

7/10

300

1/12+1/6

3/12 or 1/4

400

12/14-1/7

10/14

500

12/20-2/10

8/20 or 4/10