7+4
11
9-4
5
12+13
25
19-18
1
1x1
8+5
13
10-6
20+11
31
28-26
2
4x2
8
7+7
14
17-3
30+10
40
50-20
30
5x5
9+9
18
20-9
41+20
61
74-41
33
7x6
42
8+7
15
19-7
12
50+43
93
99-99
0
9x9
81
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