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Multiply by 10,100,1000
Find the missing factor
Multiply
Estimate each product
100

40X10

400

100

196 x _____ = 19,600

100
100

18 X 20 = 

360

100

52 x 11

500

200

52x10

520

200

______ X 1,000 = 17,000

17

200

46 x 30

1,380

200

67 x 23

1,400

300

307x10

3070

300

100 X _____ = 100,000

1,000

300

99 x 95

9,405


300

345 x 33

9,000

400

911x100

91,100

400

______ x 1,000 = 9,000,000

9,000

400

39 x 73

2,847

400

2,629 x 41

120,000

500
706x100

70,600

500

402 x _____ = 402,000

1,000

500

652 x 67

43,684

500

1,985 x 302

600,000