Unit 3 Review

Add/subtract money

100

$10.50 + $7.55 = 

$18.05

200

$25.97 - $19.55 = 

$6.42

300

$89.28 - $47.83 = 

$41.45

400

$1,047.18 + $219.15 = 

$1,266.33

500

$504.01 - $92.99 = 

$411.02

3 forms

100

Write the following in standard form:

three hundred nineteen and seven tenths

319.7

200

Write the following in word form: 

81.07

eighty one and seven hundredths

300

Write the following in word form: 

7,018.005

Seven thousand eighteen and five thousandths

400

Write the following in expanded form: 

415.22 

(4 x 100) + (1 x 10) + (5 x 1 ) + (2 x 1/10) + (2 x 1/100)

or 

(4 x 100) + (1 x 10) + (5 x 1 ) + (2 x 0.1) + (2 x 0.01)

500

Write the following in standard form: 

(9 x 1,000) + (5 x 10) + (2 x 1) + (3 x 1/10) + (2 x 1/1,000)

9,052.302

Compare/order decimals

100

Complete the comparison

98.02  ______ 51.99

98.02 > 51.99

200

Complete the comparison

3.21 _______ 3.021

3.21 > 3.021

300

Put the following in order from least to greatest

9.07

9.70

9.27

9.99

9.07

9.27

9.70

9.99

400

Put the following in order from greatest to least:

0.01

0.1

0.001

0.1

0.01

0.001

500

complete the comparison

9 ______ 9.001

9 < 9.001

Exponents/multiply and divide

100

10² = 

100

200

10³ = 

1,000

300

1.25 x 10²=

1.25 x 100 = 125

400

2.05 x 10³=

2.05 x 1,000 = 2,050

500

915.90 divided by 10¹ =

915.90 divided by 10 = 91.590

Rounding

100

Round 9.1 to the nearest whole number

9

200

Round 8.42 to the nearest whole number

8

300

Round 4.56 to the nearest tenth

4.60 or 4.6

400

Round 0.01 to the nearest tenth

0

500

Round 5.999 to the nearest hundredth

6