Decimal Review - All Operations

Add Decimals

100

10 + 7.1

17.1

200

65.1 + 102 + 5.7

172.8

300

What is the most important thing to do when adding decimals?

Line up the place value.

400

7.09 + 51.32 + 4

62.41

500

83.208 + 34 + 12.922

triple points

130.13

Subtract Decimals

100

130.13 - 15.02

115.11

200

7000 - 65.2

double points

6934.8

300

25 - 5.866

19.134

400

$227.80 - $38.30

$189.50

500

427.87 - 45.801

double points

382.069

Multiply Decimals

100

3.6 x 0.02

0.072

200

40 x $1.19

triple points

$47.60

300

6.05 x 0.8

4.84

400

0.006 x 0.24

0.00144

500

2.4 lbs of jolly ranchers for $2.28 per pound.

$5.47 

(rounded to nearest hundredth/penny)

Divide by Decimals

100

0.16 ÷ 0.5

0.32

200

27.6 ÷ 0.12

230

300

0.28 ÷ 0.004

70

400

2.304 ÷  1.2

1.92

500

25 ÷ 0.2

125

Divide by Whole Numbers

100

2.304 ÷  9

0.256

200

5 ÷ 11

0.45 (repeating)

300

364.2 ÷  6

60.7

400

3 ÷ 8

0.375

500

3 kids bought 2 headbands each. The total was $46.44. How much did each headband cost?

$7.74 each.