Add Sub 2 Digit · Set 9

20 problems
1
47 + 46 =
2
52 - 33 =
3
75 + 74 =
4
79 - 52 =
5
13 + 12 =
6
17 - 14 =
7
41 + 40 =
8
44 - 17 =
9
69 + 68 =
10
71 - 30 =
11
39 - 20 =
12
51 + 52 =
13
12 - 11 =
14
23 + 24 =
15
74 - 29 =
16
85 + 86 =
17
47 - 40 =
18
57 + 58 =
19
20 - 19 =
20
29 + 30 =
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