hard
what is 5 x 5?
20
10 x 5
50
10 x 10
100
3 x 3
6
4 x 3
12
what is 72 - 19?
63
12 x 4
48
8 x 5
40
50 x 50
2500
12 x 5
60
2 x 5
10
8 x 3
24
2x4
8
4 x 6
24
5 x 5
25
3 x 6
18
8 x 10
80
5 x 10
50
10 x 1
10
60 x 60
1200
11 x 12
132
72 x 40
2880
82 x 5
410
100 x 1,000
100,000
6 x 6
36