10+10=
20
2+2+1
5
11+3
14
6
24+30
54
7+7
4+4+1
9
9+7
16
9-7
70-20
50
22
6+6+1
13
3+8
11
15-5
10
22+22
44
9+9
18
8+8+1
17
7+8
15
12-5
7
18+60
78
8+8
3+3+1
16+4
19-17
2
22+12
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