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18 questions
5+2
7
9
15
12+3
20
8
14+6
5
16
8+8
14
19+1
30
10
28+2
29
35+5
40
12
2
8-8
0
1
10-2
12-2
9-6
3
11-3
34+4
32
38
45+2
45
47
50
10-10
4
23+5
28
6
12+2
7-4
11
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