Show:
Facts
Decompose
Multiply Across Zeros
2-by-1 Digit Multiplication
2-by-2 Digit Multiplication
100
8 x 3
24
100

400 + 20 + 8

428

100

Solve 30 x 40

1,200

100

Solve 24 x 3

72

100

Solve 45 x 12

540

200
7 x 4
28
200

50 + 2

52

200

Solve 42 x 80

3,360

200

Solve 62 x 4

248

200

Solve 81 x 23

1,863

300
8 x 4
32
300

400 +60 + 2

462

300

Solve 40 x 20

800

300

Solve 90 x 4

360

300

Solve 91 x 33

3,003

400
7 x 8
56
400

100 + 40 + 0

140

400

Solve 50 x 50

2,500

400

Solve 48 x 6

288

400

Solve 35 x 55

1,925

500
9 x 6
54
500

300 + 80 + 4

384

500

Solve 70 x 30

210

500

Solve 99 x 9

891

500

Solve 59 x 86

5,074