0's & 1's
2's
5's
9's
10's
100

0x9=?

0
100

4x2=?

8

100

5x3=?

15

100

9x3=?

27

100

10x2=?

20
200

6x1=?

6

200

2x5=?

10

200

5x4=?

20

200

10x9=?

90

200

7x10=?

70

300

1x5=?

5

300

6x2=?

12

300

5x5=?

25

300

9x5=?

45

300

10x3=?

30
400

0x100?=

0

400

7x2=?

14

400

5x7=?

35

400

8x9=?

72

400

4x10=?

40

500

1x2000=?

2000

500

2x9=?

18

500

8x5=?

40

500

9x9=?

81

500

8x10=?

80