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100

1/4 + 1/4 

2/4 or 1/2

100

1/3+1/2

5/6

100

2/4

1/2

100

1 1/3 + 1 1/2

2 5/6

100

4 2/3 - 2 1/3

2 1/3

200

3/4+3/4

6/4 or 1 and 1/2

200

3/12+1/6

5/12

200

24/56

3/7

200

2 1/4 + 2 1/4

4 2/4 or 4 1/2

200

2 1/3 - 1 1/7

1 4/21

300

2/7+3/7

5/7

300

13/20-1/4

8/20 or 2/5

300

16/24

2/3

300

3 1/5 + 4 1/3

7 8/15

300
1 2/4 - 1 1/2

0

400

15/2 - 12/2

3/2 or 1 1/2

400

1/4-1/6

1/12

400

15/4

3 3/4

400

10 1/2 + 11 6/8

22 1/4 or 22 2/8

400

2 3/4 - 1 1/2

1 1/4

500

3/8-2/8

1/8

500

1/3-1/15

4/15

500

21/3

7

500

3 1/5 + 4 1/5

7 2/5

500

3 1/5 - 1 1/6

2 1/30