Chapter 5 Review

Properties

100

What property of addition is this?
(15+25)+88 = 15+(25+88)

Associative Property

200

What property of addition is this?
15+8 = 8+15

Commutative Property

300

What property of addition is this?
12.7+0 = 12.7

Identity Property

400

Name two types of addition property used in the following problem.
37+48 = (30+7) + (40+8)
= 30 + 40 + 7 + 8
= (30+40) + (7+8)
= 70 + 15
= 85

Commutative and Associative Properties

500

What type of operation is this?
1.73-0.87 = .86
0.87+0.86 = 1.73

Inverse Operation

Rounding

100

Round to the ones.
67.142

67

200

Round to the ones.
19.25

19

300

Round to the tenths.
9.045

9.0

400

Mr. Bosarge bought a new touch screen device. It weighs 1.648 pounds. What is the weight to the nearest whole number?

2 pounds

500

Ms. Suter bought chocolate and spent $23.52. What is that amount rounded to the nearest dollar?

$24

Estimation

100

Estimate 23.78 + 10.45 to the nearest ten.

30

200

Mr. Bosarge buys a pizza for $7.23 and a soda for $1.79. About how much money does he spend?

$9

300

Estimate to the nearest dollar.
Ms. Suter is staying in a hotel for 2 nights. the hotel costs $91.35 a night. About how much will she pay for the hotel?

$180

400

Which is the best estimate of 6.82 + 13.03?
a. 19
b. 20
c. 21
d. 22

B

500

Ms. Suter has $10. She buys the deluxe grilled cheese sandwich that includes bacon, jalapeño peppers, tomatoes and onions for $5.32. About how much change will she get back?

$5

Base-Ten Blocks

100

Find $1.30 + $0.50 using base-ten models.

$1.80.
See Ms. Suter for models.

200

Find 1.72 + 1.77 using base-ten models.

3.49.
See Ms. Suter for models.

300

Find 2.17 - 1.9 using base-ten models.

2.7.
See Ms. Suter for models.

400

Using base-ten models find the answer.
Mr. Bosarge cut a piece of wood that was 1.6 feet long from a 3.25-foot piece of wood. How long is the remaining piece of wood?

1.6 feet.
See Ms. Suter for models.

500

Using base-ten models find the answer.
Ms. Suter bought 4.7 pounds of rice on Monday. On Tuesday she ate .82 pounds of rice. On Thursday she had friends over and together they ate 3.02 pounds of rice. How much rice does she have left?

.86 pounds.
See Ms. Suter for models.

Models

100

Using models, solve 1.34 + 1.15.

2.49.
See Ms. Suter for models.

200

Using models, solve the problem.
Ms. Suter measured a nickel. The length was 2.7 centimeters. What was the combined length of three nickels lying side by side?

8.1 cm.
See Ms. Suter for models.

300

Using models, solve the problem.
1.53 - 1.41

.12.
See Ms. Suter for models.

400

Using models, solve the problem.
On a lovely day in October, Ms. Suter and Ms. Cooper went hiking in the Rocky Mountains. Ms. Suter hiked for 1.6 miles and Ms. Cooper hiked for 2.3 miles. How many more miles did Ms. Cooper hike compared to Ms. Suter?

.7 miles.
See Ms. Suter for models.

500

Using models, solve the problem.
Mr. Bosarge bought 3.35 pounds of coffee. He brewed 1.78 pounds within the first week. How many pounds of coffee did he have left?

1.57 pounds.
See Ms. Suter for models.