Multiplying Decimals by Whole Numbers Worksheet

**Page 1**

1.

Ursula and her sister Emily sell chocolates. They sold $48.73 of chocolates in a week. Their sales remained same throughout the month. How much did they earn in the month?

[Take number of weeks in a month = 4.]

[Take number of weeks in a month = 4.]

a. | $195.92 | ||

b. | $192.92 | ||

c. | $193.92 | ||

d. | $194.92 |

So, they earned $194.92 in the month.

Correct answer : (4)

2.

Arthur charges $10.55 to install a software in a PC. How much does he earn, if he installs the software in 5 PCs?

a. | $51.75 | ||

b. | $52.75 | ||

c. | $53.75 | ||

d. | $54.75 |

10.55

× 5

........

52.75

........

× 5

........

52.75

........

[2 decimal places.]

[No decimal place.]

[2 decimal places.]

Arthur earns $52.75 if he installs the same software in 5 PCs.

Correct answer : (2)

3.

A bag of tomatoes weighs 5.44 grams. Find the weight of 14 bags of tomatoes.

a. | 76.16 grams | ||

b. | 74.16 grams | ||

c. | 77.16 grams | ||

d. | 75.16 grams |

5.44

× 14

.........

76.16

.........

× 14

.........

76.16

.........

Weight of 14 such bags is 76.16 grams.

Correct answer : (1)

4.

A container can hold 24.61 pints of oil. How much oil can 42 containers hold?

a. | 991.62 pints | ||

b. | 1033.62 pints | ||

c. | 1075.62 pints | ||

d. | None of the above |

24.61

×42

.........

1033.62

.........

×42

.........

1033.62

.........

[2 decimal places.]

[No decimal place.]

[2 decimal places.]

42 containers can hold 1033.62 pints of oil.

Correct answer : (2)

5.

A metal rod was cut into 2 equal parts, each of length 3.25 m . Find the original length of the metal rod.

a. | 8.8 m | ||

b. | 6.5 m | ||

c. | 6.7 m | ||

d. | 6.3 m |

3.25

×2

...........

6.50

............

×2

...........

6.50

............

[2 decimal places.]

[No decimal places.]

[2 decimal places.]

The length of the original metal rod is 6.5 m.

Correct answer : (2)

6.

Mr. Justin's family consumes 2.38 gallons of cooking oil per month. How much cooking oil do they consume in a year?

a. | 16.56 gallons | ||

b. | 52.56 gallons | ||

c. | 28.56 gallons | ||

d. | 40.56 gallons |

2.38

× 12

........

28.56

........

× 12

........

28.56

........

[2 decimal places.]

[No decimal places.]

[2 decimal places.]

Justin's family consumes 28.56 gallons of cooking oil in a year.

Correct answer : (3)

7.

Tony, a fashion designer, uses 3.9 m of a fabric to make an exclusive outfit. How much fabric does he need to make 9 such outfits?

a. | 35.1 m | ||

b. | 36.1 m | ||

c. | 34.1 m | ||

d. | 37.1 m |

3.9

× 9

..........

35.1

..........

× 9

..........

35.1

..........

[1 decimal place.]

[No decimal place.]

[1 decimal place.]

Tony needs 35.1 m of fabric to make 9 such outfits.

Correct answer : (1)

8.

Jimmy saves $10.30 from his weekly earnings. How much would he save in 4 weeks, if he manages to save all that amount each week?

a. | $41.20 | ||

b. | $42.20 | ||

c. | $39.20 | ||

d. | $40.20 |

= 10.30 × 4 = $41.20

Correct answer : (1)

9.

A playground in the shape of a square is 24.2 ft long. Find the perimeter of the playground.

a. | 96.8 ft | ||

b. | 94.8 ft | ||

c. | 97.8 ft | ||

d. | 98.8 ft |

[Write the formula.]

Perimeter of the playground = 4 × side of the playground

24.2

× 4

............

96.8

............

× 4

............

96.8

............

[1 decimal place.]

[No decimal place.]

[1 decimal place.]

Perimeter of the playground is 96.8 ft.

Correct answer : (1)

10.

A carpenter made a circular bed with a radius of 2.3 ft . What is the diameter of the bed?

a. | 4.6 ft | ||

b. | 4.7 ft | ||

c. | 4.5 ft | ||

d. | 4.4 ft |

Diameter of the bed = 2 × (radius of the bed)

2.3

× 2

...........

4.6

............

× 2

...........

4.6

............

[1 decimal place.]

[No decimal place.]

[1 decimal place.]

Diameter of the bed is 4.6 ft.

Correct answer : (1)