1math
10-2
8
7+7+7
21
60+40
100
5x40
200
30x4
120
10x10
100
8x2+4
20
5x5
25
50+40+30
120
3x3
9
2x2x2
8
3x3x3x3
81
8x8
64
5000+15000
20000
6x6
36
0/0
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100x10,000
1,000,000
20x20
400
9x9
81
8x7
13x13
169
35x35
1225
12x11
132
64x64
4096
17x17
289