1 times 1
equals 1
2 times 2
equals 4
3 times 3
equals 9
4 times 4
equals 16
5 times 5
equals 25
6 times 6
equals 36
7 times 7
equals 49
8 times 8
equals 64
9 times 9
equals 81
10 times 10
equals 100
11 times 11
equals 121
12 times 12
equals 144
13 times 13
equals 169
14 times 14
equals 196
15 times 15
equals 225
20 times 20
equals 400
25 times 25
625
30 times 30
900