Adding Fractions
Subtracting Fractions

100

2/4 + 1/4

3/4

100

3/5 - 1/5 

2/5

200

2/5 + 1/5

3/5


200

4/6 - 7/6

3/6

300

4/7 + 1/7

5/7

300

8/9 - 6/9

2/9


400

6/8 + 4/8

10/8

400

6/9 - 1/9

5/9