Show:
A
1 by 1 digit multiplication
B
1 by 1 digit multiplication
C
1 by 2 digit multiplication
D
1 by 2 digit multiplication
E
1 by 3 digit multiplication
100

2 x 5

10

100

10 x 1

10

100

2 x 44

88

100

2 x 35

70

100

1 x 100

100

200

3 x 6

18

200

4 x 3

12

200

5 x 48

240

200

5 x 30

150

200

2 x 250

500

300

8 x 8

64

300

7 x 6

35

300

8 x 52

416

300

4 x 97

388

300

4 x 212

848

400

9 x 4

36

400

4 x 9

36

400

9 x 28

252

400

8 x 19

152

400

7 x 191

1337

500

9 x 7

56

500

8 x 6

48

500

9 x 87

783

500

7 x 83

581

500

6 x 430

2580