12+12
24
15+23
38
2x2
4
2-2
0
12-4
8
4+4
12+4
16
6x2
12-3
12-5
7
6+6
12
18+321
339
2x8
123-1+1
123
123-24
99
7+7
14
19+5
8x4
32
15-20
cant do it
12-0
10+10
20
20+13
33
9x4
36
27-8
19
596-9
587
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