Show:
3s and 4s
5s and 6s
7s
8s
9s
100

3x0

0

100

5x3

15

100

7x1

7

100

8x0

0

100

9x1 

9

200

3x3

9

200

5x9

45

200

7x3

21

200

8x2

16

200
9x2

18

300

4x3

12

300

6x8

48

300

7x5

35

300

8x4

32

300

9x6

54

400

4x6

24

400

6x6

36

400

7x7

49

400

8x5

40

400

9x8

72

500

4x7

28

500

6x9

54

500

7x9

63

500

8x7

56

500

9x9

81