Show:
Multiplication Patterns
Front-end Estimation
2/3/4-digit by 1-digit Multiplication
2-digit by 2-digit Multiplication
3-digit by 2-digit Multiplication
100

20 X 30

600

100

60 X 20

1200

100

23 X 2

46

100

23 X 13

299

100

201 X 44

8844

200

400 X 20

8000

200

50 X 70

3500

200

444 X 7

3,108

200

42 X 12

504

200

132 X 23

3036

300

2400 X 60

144000

300

450 X 800

320000

300

397 X 5

1,985

300

57 X 19

1083

300

841 X 56

47,096

400

540 X 700

378000

400
700 X 80

56000

400

8,119 X 9

73,071

400

34 X 93

3162

400

634 X 84

53,256

500

8970 X 500

4485000

500

940 X 800

720000

500

4,372 X 6

26,232

500

67 X 58

3886

500

837 X 79

66,123