Multiplying by 2s | Multiplying by 3s | Multiplying by 4s |
---|---|---|
4
2x2
|
9
3x3
|
16
4x4
|
6
3x2
|
12
4x3
|
20
5x4
|
8
4x2
|
15
5x3
|
24
6x4
|
10
5x2
|
18
6x3
|
28
7x4
|
12
6x2
|
21
7x3
|
32
8x4
|