Multiplying Decimals

Powers of 10

5

0.009 x 10

What is 0.09

10

0.45 x 100

What is 45?

15

3.1 x 1,000

What is 3,100?

20

0.062 x 100

What is 6.2?

30

2.89 x 10 2.89 x 100 2.89 x 1000

What is 28.9. 289. 2,890?

Whole # x decimal

5

9.8 x 2

What is 19.6?

10

0.67 x 8

What is 5.36?

15

0.457 x 3

What is 1.371?

20

45 x 0.003

What is 0.135?

30

514 x 0.4

What is 205.6?

Dividing Decimals

5

Write the equations that are represented in this model. 

6 / 0.3 = 20

0.3 x 20 = 6

10

Write the equations represented in this model. 

3 / 0.6 = 5

0.6 x 5 = 3

15

Write the equations represented by this model

3 / 0.75 = 4

0.75 x 4 = 3

20

Write the equations represented by this model. 

5.4 / 9 = 0.6 or 5.4/0.6 = 9

and

9 x 0.6 = 5.4

30

Write the equations represented by this model. 

3.5 / 0.7 = 5

0.7 x 5 = 3.5

Multiplying Decimals

5

0.05 x 4.5

What is 0.225?

10

8.6 x 0.08

What is 0.688?

15

3.42 x 4.7

What is 16.074?

20

9.1 x 11.6

What is 105.56?

30

0.28 x 3.7

What is 1.036?

Challenge!

5

Zach gets an allowance of $10 a week. He saves 0.2 of it. How much does he save each week?

What is $2?

10

A new park will cover 17 acres. The planner will use 0.2 acres for a new basketball court. How much area will he use for the new court?

What is 3.4 acres?

15

In Mrs. Parkerson's science class, each of the 32 students received 3.4 pounds of sugar for a project. How much sugar did the class use?

What is 108.8 pounds?

20

Gabriel has a stack of nickels that is 6 inches tall. The thickness of a nickel is 0.08 of an inch. How many nickels does Gabriel have?

75 nickels

30

Brett bought 12 new books at the book fair. He paid $1.25 for each book. What was his total cost for the books?

What is $15?