Add 'em up
13
+ 17
______
34
- 12
______
22
7 x 3 =
21
9 x 8 =
72
22
+ 57
______
79
49
- 17
______
32
8 x 4 =
32
6 x 8 =
48
39
+ 48
______
87
85
- 47
______
38
8 x 7 =
56
7 x 9 =
63
89
+ 66
______
155
91
- 49
______
42
7 x 6 =
42
8 x 8 =
64