Multiplying by Multiples of 10

A

100

2 X 10

20

200

5 X 20

100

300

3 X 30

90

400

2 X 400

800

500

60 X 800

48000

B

100

3 X 10

30

200

6 X 20

120

300

4 X 30

120

400

3 X 400

1200

500

7 X 8,000

56,000

C

100

4 X 10

40

200

7 X 20

140

300

5 X 30

150

400

4 X 40

160

500

70 X 70

4900

D

100

5 X 10

50

200

8 X 20

160

300

6 X 30

180

400

5 X 400

2000

500

9 X 9000

81,000

E

100

6 X 10

60

200

9 X 20

180

300

7 X 30

210

400

6 X 40

240

500

70 X 90

6300