Unit 4 - Decimal Review

Whole x Decimal

100

5 x 1.5

7.5

200

12 x 2.49

29.88

300

15 x 13.5

202.5

400

95 x 1.7

161.5

500

Mrs. McCann buys 3 daises for $0.76 each, 5 roses for $1.23 each, and a flowerbed for $4.59. If he pays with a $20 bill, how much change does he get back?

Step 1: 3 x 0.76 = 2.28

Step 2: 5 x 1.23 = 6.15

Step 3: 2.28 + 6.15 + 4.59 = 13.02

Step 4: 13.02 - 20.00 = 6.98

$6.98

Decimal x Decimal

100

0.5 x 0.5

0.25

200

0.4 x 3.4

1.36

300

4.6 x 3.5

16.1

400

12.9 x 1.1

14.19

500

Al and Barb each go to the store to buy school supplies. Al buys 11 colored pencils for $0.69 each and Barb buys 3 packs of folders for $2.70 per pack. How much did they spend altogether?

Step 1: 11 x 0.69 = 7.59

Step 2: 3 x 2.70 = 8.10

Step 3: 7.59 + 8.10 = 15.69

$15.69

Decimal / Whole

100

10.5 / 4

2.625

200

0.64 / 16

0.04

300

113.4 / 9

12.6

400

55 / 5000

0.011

500

Cora is saving for a vacation. The total cost of the vacation is $600.36, and she has a year to save the money. How much should she save per month so she can meet her goal?

Step 1: 600.36 / 12 = 50.03

$50.03

Whole / Decimal

100

100 / 0.1

1,000

200

10 / 0.5

20

300

50 / 0.2

250

400

115 / 4.6

25

500

A developer owns 24 acres of land. He plans to use 1.2 acres for an entrance into a housing development and divide the remaining land into 0.6 acre lots. How many lots will he have?

Step 1: 24 - 1.2 = 22.8

Step 2: 22.8 / 0.6 = 38

38 lots

Decimal / Decimal

100

1.5 / .5

3

200

16.16 / 0.4

40.4

300

99.3 / 0.3

33.1

400

24.8 / 0.4

6.2

500

Jean runs 3.5 miles per week while Janell runs 13.3 miles per week. Janell runs how many times the number of miles that Jean runs?

(Hint: Janell / Jean)

Step 1: 13.3 / 3.5 = 3.8

3.8 times