7+9
16
10+15
25
9-6
3
67-55
20 + 30 =
50
8+3
11
11+21
32
5-3
53-41
12
15 + 15 =
30
6+4
10
15+36
51
8-4
98-45
53
10 + 10 =
7+6
13
32+32
64
6-2
4
75-25
35 + 35 =
70
9+9
18
65+35
9-2
7
99-92
23 + 45 =
68
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