Unit 5

Adding Decimals

100

5.89 + 1.45

7.34

200

9.2 + 3.69

12.89

300

2.2 + 3.965 + 2

8.165

400

91.95 + 45.375

137.325

500

If I have $12 and I go to the store and buy a pack of gum for $2.99, a juice for $1.98 and a gallon of milk for $6.99. Do I have enough money to get all three items?

Yes, $11.96

Subtracting Decimals

100

7.3 - 5.4

1.9

200

6 - 5.5

0.5

300

12.004 - 6.34

5.664

400

6.8 - 2.341

4.459

500

I have $10 and I bought lunch for 8.98. How much money did I get back?

$1.02

Multiplying Decimals

100

4.2 x 1.6

6.72

200

1.6 x 0.215

0.344

300

6.2 x 4.23

26.226

400

0.89 x 0.12

0.1068

500

A rectangular plot of land is 0.4 kilometer long and 0.07 kilometer wide. What is its area in square kilometers?

0.028km²

Dividing Decimals

100

33 ÷ 4

8.25

200

4, 235 ÷ 11

385

300

43.5 ÷ 5

8.7

400

7 ÷ 8

0.875

500

45.60 ÷ 2.5

18.24

Mixed

100

7.78 + 2.369

10.149

200

120 - 15.68

104.32

300

5.69 x 3.2 

18.208

400

952 ÷ 5

190.4

500

98 ÷ 6.3

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