Multiplying by 4
Multiplying by 9
Multiplying by 10
Multiplying by 12
100

1x4

4

100

9x4

36

100

10x1

10

100

12x3

36

200

4x8

32

200

9x6

54

200

10x4

40

200

12x6

72

300

4x6

24

300

9x3

27

300

10x2

20

300

12x10

120

400

4x10

40

400

9x5

45

400

10x6

60

400

12x12

144

500

4x7

28

500

9x2

18

500

10x1

10

500

12x9

108

M
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