Show:
Adding
Adding MN
Subtracting
Subtracting MN
Mixed to Improper
100
2/8 + 3/8
5/8
100

5 1/7 + 2 3/7

7 4/7

100
8/9 - 3/9
5/9
100

8  6/7 - 3  3/7

5   3/7

100

2 1/3

7/3

200
8/35 - 6/35
2/35
200

9 2/8 + 8 5/8

17 7/8

200
7/9 - 4/9
3/9
200

10  4/6 -  5  2/6

5  2/6

200

4  5/6

29/6

300
3/16 + 4/16
7/16
300

5 2/3 + 2 2/3

8 1/3

300
35/67 -26/67
9/67
300
8  2/8 - 2  7/8

5  3/8

300

8   4/6

52/6

400
57/102 +36/102
93/102
400

12   7/12 + 6   8/12

19   3/12

400
102/124 - 71/124
31/124
400

25   2/12 - 10  9/12

14  5/12

400

12 3/8

99/8

500
137/194 + 32/194
169/194
500

23   19/25 + 14   20/25

38   14/25

500
172/208 - 75/208
97/208
500

32   4/36 - 15  18/36

16   22/36

500

17   5/9

158/9