Add, Subtract, Multiply, and Divide Decimals

Adding Decimals

100

Do you line up decimals when you add?

yes

200

Add:

72381.34 + 89032.452 = ? 

161413.792

300

Add

23.99 + 6.99 = 

30.98

400

Add

204.15  +  1.29

205.44

500

Add

105 + 54.77 =

159.77 

Subtracting Decimals

100

Do you line up decimals when you subtract?

yes

200

Subtract: 

4.75891 - 2.8329 = ?

1.92601

300

subtract

6.054 - 0.61

5.444

400

Subtract

75.88 - 3.44 =

72.44

500

subtract

100 - 33.55 =

66.45

Multiplying Decimals

100

Do you line up decimals when you multiply?

no

200

Multiply:

28.23 * 4.73

133.5279

300

Multiply: 

25.12 * 2.96

74.3552

400

Multiply:

606.4 × 6.2

3,759.68

500

Multiply:

810.54 × 625.71

507,162.9834

Dividing Decimals

100

Do you line up decimals when you Divide?

No

200

Divide:

606.7/2

303.35

300

Divide:

43.7297 ÷ 3.49

12.53

400

Divide: Round to the nearest tenth.

940 / 3

313.33

500

Divide: Round your answer to the nearest hundredth. 

660 / 5.3 

124.53

TEACHERS CHOICE

100

Divide: 

9520.7/7

1360.1

200

ADD: 

6.141 + 0.84

6.981

300

Divide:

925.4/ 7

132.2

400

Add: 

1483279.87 + 8913.192

1492193.062

500

Multiply: 

0.84 × 83.67

70.2828