Decimal Operations

Adding

100

4.88 + 0.09 = 

4.97

200

3.76 + 1.35 =

5.11

300

11.98 + 27.79 =

39.77

400

To make a cleaning liquid, Jada adds 0.35 liter of vinegar to 16.4 liters of water. How many liters does the mixture contain? 

16.75 liters

500

Mai’s backpack weighs 9 pounds. Han’s backpack weighs 8.3 pounds. Priya’s backpack weighs 7.75 pounds. Kiran’s backpack weighs 6.125 pounds. How much do the backpacks weigh all together?

31.175

Subtracting

100

9.48 - 7.32 = 

2.16

200

0.2 - 0.05 =

0.15

300

Han and Mai are training for a long race. Han ran 4.2 miles, while Mai ran 5.29 miles. How much farther did Mai run than Han? 

1.09

400

Find the difference. 

1 - 0.5904 

0.4096

500

A runner has run 1.192 kilometers of a 10-kilometer race. How much farther does she need to run to finish the race?

8.808

Multiplying

100

1.5 x 0.7

1.05

200

(5.4) ⋅ (2.4)

12.96

300

(1.67) ⋅ (3.5)

5.845

400

Find the product. 0.072 x 0.31

0.02232

500

Calculate 1.6 ⋅ 0.215

0.344

Dividing

100

Find the quotient. 3,328 ÷ 8

416

200

Find the quotient. 868 ÷ 14

62

300

Find the quotient. 78.9 ÷ 3

26.3

400

An art store sells 12 markers for $27. What is the unit price? 

$2.25

500

A path of a race is divided into 5 equal sections. The race is 42.195 km long. How long is each section? 

8.439

Random

100

1.5 + 8.29

9.79

200

6.5 - 1.49

5.01

300

15 x 0.36

5.40

400

Which value is closest to the quotient of 5,278 ÷ 0.05?

A. 1,000,000

B. 100,000

C. 10,000

D. 1,000

B. 100,000

500

Divide: 0.0408 ➗ 0.04

1.02