Multiply Decimals by 10, 100, or 1,000
Round to nearest whole number
Divide Decimals by 10, 100, or 1,000
Round to nearest tenths
Word Problems
100

87.5 x 10

875

100

6.25

6

100

74.3 ÷ 10

7.43

100

78.653 

78.7

100

Jack bought 10 gallons of gas at $4.56 per gallon. How much did he pay for the gas?

$45.60

200

7.863 x 10

78.63

200

0.78

1

200

8.364 ÷ 10

0.8364

200

33.439 

33.4

200

The fastest speed for a swimmer was 6.05 mph. The fastest speed a tennis ball has been hit is   10 times faster than the fastest speed for a swimmer. What is the speed for the tennis ball?

The tennis ball's speed was 60.5 mph.

300

0.467 x 100

46.7

300

8.35

8

300

0.72 ÷ 100

0.0072

300

186.576

186.6

300

Cindy ran 456.8 miles in 100 days. If she ran an equal distance each day, how many miles did she run per day?

She ran 4.568 miles per day.

400

8.2965 x 100

829.65

400

9.789

10

400

3.141 ÷ 100

0.03141

400

2.993

3.0

400

A number is the largest number with 2 decimal places that round to 10

10.49

500

349.872 x 1,000

349,872

500

399.982

400

500

437.932 ÷ 1,000

0.437932

500

59.929

60.9

500

0.45      1.45      2.45      3.45

1 add the numbers on the cards 

 I round the result to the nearest whole number. 

 My answer is 5 

Which two cards did I choose?











3.45   1.45

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