Multiply by 10
Multiply by 100
How many zero's?
Use area model
Multiply by 100 Hard!
100

5 X 10 =

50

100

5 X 100 =

500

100

If you multiply 5 by 10 how many zero's will be at the end of your answer?

1 zero

100

47 X 33

1551

100

100 X 60

6,000

200

10 X 10 =

100

200

2 X 100 =

200

200
If you multiply 7 X 100 how many zero's will be in your answer?

2 zero's

200

56 X 15

840

200

100 X 43

4,300

300

200 X 10 =

2,000

300

123 X 100 =

12,300

300

If you multiply 456 by 10 how many zero's will be in your answer?

1 zero

300

37X18

703

300

100 X 9,542

954,200

400

232 X 10 =

2,320

400

345 X 100 =

34,500

400

How many zero's will be in the product of 203 X 10?

2 zero's  

2,030

400

99 X 29

2871

400

4,432 X 100

443,200

500

12,450 X 10 =

124,500

500
62,444 X 100 =

6,244,400

500

How many zero's will be in the product of 8,020 X 100?

4 zero's  

802,000

500

12 X 39

468

500

100 X 123,456

12,345,600

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