Adding and Subtracting Fractions

Adding Fractions with like denominators

100

3/8 + 2/8

5/8

200

5/12 + 4/12

9/12 or 3/4

300

7/10 + 1/10

8/10 or 4/5

400

6/9+2/9

8/9

500

11/15 + 3/15

14/15

Subtracting Fractions with like denominators

100

9/10 - 4/10

5/10 or 1/2

200

8/12 - 5/12

3/12 or 1/4

300

7/8 - 3/8

4/8 or 1/2

400

13/16 - 9/16

4/16 or 1/4

500

14/20 - 6/20

8/20 or 2/5

Adding fractions with unlike denominators

100

1/2 + 1/4

3/4

200

2/3 + 1/6

5/6

300

3/5 + 2/10

8/10 or 4/5

400

4/9 + 2/3

10/9 or 1 1/9

500

5/8 + 3/4

11/8 or 1 3/8

Subtracting Fractions with unlike denominators

100

3/4 - 1/8

5/8

200

5/6 - 1/3

3/6 or 1/2

300

7/10 - 2/5

3/10

400

9/12 - 1/4

2/4 or 1/2

500

11/15 - 2/3

1/15

Adding mixed numbers

100

2 1/4 + 1 2/4

3 3/4

200

3 3/5 - 1 1/5

2 2/5

300

4 1/2 + 2 3/4

7 1/4

400

5 2/3 - 3 1/6

2 3/6 or 2 1/2

500

6 5/8 - 2 3/8

4 2/8 or 4 1/4