Multiplying by Multiples of 10

A

100

20 X 10

200

200

50 X 20

1000

300

30 X 30

900

400

20 X 40

800

500

600 X 80

48000

B

100

30 X 10

300

200

60 X 20

1200

300

40 X 30

1200

400

90 X 40

3600

500

700 X 80

56000

C

100

40 X 10

400

200

70 X 20

1400

300

50 X 30

1500

400

40 X 40

1600

500

700 X 70

49000

D

100

50 X 10

500

200

80 X 20

1600

300

60 X 30

1800

400

50 X 40

2000

500

900 X 90

81000

E

100

60 X 10

600

200

90 X 20

1800

300

70 X 30

2100

400

60 X 40

2400

500

700 X 90

63000