Fast Facts
1-digit X 10
1-digit X 2-digit
2-digit X 2-digit
100

1x4

4

100

4x10

40

100

3x20

60

100

12x12

144

200

2x6

12

200

10x10

100

200

4x15

60

200

21x34

714

300

3x10

30

300

12x10

120

300

6x25

150

300

31x31

961

400

4x8

32

400

30x10

300

400

8x36

288

400

35x63

2,205

500

7x9

63

500

62x10

620

500

5x78

390

500

99x82

8,118