Multiplying by 1's
1 x 7
7
3 x 3
9
5 x 2
10
7 x 2
14
9 x 1
9
11 x 1
11
3 x 5
15
4 x 5
20
3 x 7
21
3 x 9
27
1 x 23
23
24
35
6 x 7
42
5 x 9
45
76 x 1
76
10 x 3
30
10 x 5
50
8 x 7
49
9 x 9
81
1 x 525
525
3 x 11
33
20 x 5
100
7 x 9
63
11 x 9
99