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100

1/2 + 1/2 = 

2/2 or 1

100

9/10 - 7/10= 

2/10

100

3/5 * 2/4 =

6/20

100

2/4 divided by 3/4

8/12

200

4/7 + 1/7 = 

5/7

200

8/9 -6/9=

2/9

200

6/7 * 2/5 =

12/35

200

3/5  divided by 4/5

15/20

300

3/10 + 5/10 = 

8/10

300

10/10 - 4/10 =

6/10

300

10/11 * 4/5=

40/55

300

7/8 divided by 4/6=

42/32

400

12/20 + 5/20 = 

17/20

400

99/100- 98/100=

1/100

400

9/10 *  9/10=

81/100

400

5/9 divided by 7/8=

40/63

500

11/24 + 12/24

23/24

500

100/102 - 99/102=

1/102

500

10/12 * 10/12 =

100/144

500

10/11 divided by 4/5=

50/44