Multiply by
2
2
1x2
2
2x5
10
2x10
20
4x2
8
9x5
45
7x10
70
8x2
16
1x5
5
11x10
110
7x2
14
7x5
35
5x10
50
5x2
10
10x5
50
10x10
100
10x2
20
3x5
15
12x10
120
12x2
5x5
25
1x10
10
3x2
6
11x5
55
3x10
30
9x2
18
4x5
20
6x10
60
11x2
22
6x5
30
8x10
80
2x2
4
8x5
40
4x10
40
6x2
12
12x5
60
9x10
90