Adding
Adding
Subtract
Subtract
Mix it up
100

2/8 + 3/8

5/8

100
3/9 + 5/9
8/9
100

8/9 - 3/9

5/9

100
6/7 - 3/7
3/7
100
6/13 + 3/13
9/13
200
8/35 - 6/35
2/35
200
6/6 - 1/6
5/6
200
7/9 - 4/9
3/9
200
7/6 - 4/6
3/6 or 1/2
200
7/9 - 5/9
2/9
300
3/16 + 4/16
7/16
300
35/78 + 37/78
72/78
300
35/67 -26/67
9/67
300
27/56 - 14/56
13/56
300
35/76 + 27/76
62/76
400
57/102 +36/102
93/102
400
75/127 +27/127
102/127
400
102/124 - 71/124
31/124
400
987/1099-25/1099
965/1099
400
99/100 - 64/100
35/100
500
137/194 + 32/194
169/194
500
62/198 + 72/198
134/198
500
172/208 - 75/208
97/208
500
203/215 - 87/215
116/215
500
346/757 - 259/757
87/757