Math Review for Test

Section 3.3: Rounding Decimals

100

Round 1.325 to the nearest hundredth

1.33

200

Approximate the operation.

14.69+39.8=

15+40=55

300

Round 2428.593 to the nearest hundredth

2428.59

400

True or false: 

2697.258 rounded to the nearest tenth is 2697.26 

False 

500

Round 14.908 to the nearest hundredth.

14.91

Section 3.2: Decomposing Decimals

100

Write this number in expanded form:

 1827.05

(1x 1000)+ (8 x 100)+ (2x10)+ (7x1)+ (0x1/10) (5x1/100)

200

Decompose the number 482.62.

(4x100)+(8x 10)+ (2x1)+(6x0.1)+(2x0.01)

300

What is the place value of digit 2 in the number 84.253

Tenths

400

Write the fraction in decimal form. 

145/1000=____

0.0145

500

Write the decimal in a fraction.

8.97=____

897/100

Section 3.1: Representing and Comparing Decimals

100

Write the standard form

Forty-five thousand two hundred thirty-two and thirty-five hundredths

45 232.35

200

Which is the greatest number in this group?

12.404, 12.444, 12.04, 12.414, 12.041

12.444

300

Compare the number using <, >, or = symbol.

67.12   67.102

67.12> 67.102

400

Which number is the smallest number in this group?

12.404, 12.444, 12.04, 12.414, 12.041

12.04

500

Write the standard form:

Forty-five thousand two hundred twenty-three and three thousandth

45 223.003

Section 3.4: Multiplying a Decimal by a Natural Number

100

Multiple 65.39 x5?

326.95

200

Multiply 89.17 x42

3745.14

300

Multiply 125.09 x 9

1125.81

400

Multiply 236.42 x 36

8511.12

500

Multiple the operation. 

78.5 x 7=

549.5

Section 3.4: Multiplying by 10, 100, 1000

100

True or False?

237.208 × 10 = 23 720.08

False 

200

Multiply 128.541 x 10

1285.41

300

Complete this equation by using one of the following. 

99.07 x ? = 990.7

x10

400

Multiply 426.301 x 100=

426 30.1

500

Multiply 708.490 x1000

708 490