multiply by 100
multiply by 4
multiply by 5
multiply by 1000
multiply by 7
100

100x70= 

7000

100

4x8=

32

100

5x10=

50

100

1000x2=

2000

100

7 x 5 

35

200

100x100=

10000

200

4x10=

40

200

5x25

125

200

1000x5

5000

200

7 x 7

49

300

100x30=

3000

300

4x2=

8

300

5x8=

40

300

60 x 1000

60000

300

7 x 9 

63

400

100x50=

5000

400

4x7=

28

400

5x9=

45

400

80 x 1000

80000

400

7 x 10 

70

500

100x1000=

100000

500

4x80=

320

500

5x35=

175

500

100 x 1000

100000

500

7 x 12

84