Decimals

Multiplying by 10, 100. 1000

100

12.1 x 100

1,210

200

9.563 x 10 =

95.63

300

52.1 x 1,000 =

52,100

400

0.321 x 100 =

32.1

500

59.8 x 1,000 =

59,800

Exponents

100

10x 10 x10 x10

Write in exponential form

10⁴

200

1000,000

write the exponential form

10⁶

300

What is the product?

23 x 10³ 

23,000

400

What is the unknown factor?

571 x ________ = 57100

100

500

Multiply 326 x 7 = 

2,282

Estimating

100

Estimate the answer to:

5.2 x  13.1

65

200

Estimate the answer to:

7.82 x 3.4

24

300

Estimate the answer to:

58.9 x 2.34

120

400

Estimate the answer to:

 5.68 x 29.9

180

500

Estimate the answer to:

7.98 x 12.56

80