Unit 2 Review

Order of Operations

100

Evaluate the Expression:

4 x (2 + 3)

20

200

(6 x 5) - (3 + 2 x 6)

15

300

(9 x 2) ÷ (9 ÷ 3 x 2)

3

400

(4 + 5 x 6) - (13 + 8) ÷ 3

27

500

Write and expression for the statement

3 times the difference of 12 and 8 added to 6

3 x (12 - 8) + 6

or

6 + 3 x (12 - 8)

Powers of 10

100

What is the decimal form of:

4 x 1 + 3 x (1/10) + 5 x (1/100)

4.35

200

What is 6.04 in expanded form?

6 x 1 + 4 x (1/100)

300

What is the decimal form of

2 x (1/10) + 9 x (1/1000)

0.209

400

What is the missing number in

____ x 1/10 = 3.6

36

500

What is the missing number in

0.165 x _____ = 16.5

100

More Powers of 10

100

10,000 in exponent form

10⁴

200

(2x4) x 10³ in standard form

8,000

300

Fill in the blank:

2.8 x ____ = 0.028

1/100

400

What is 10⁶ in expanded form?

10 x 10 x 10 x 10 x 10 x 10

500

Fill in the blank:

_____ x 1/1000 = 0.361

361

Rounding Decimals

100

3.75 rounded to the nearest tenth

3.8

200

1.284 rounded to the nearest hundredth

1.28

300

7.125 rounded to the nearest hundredth

7.13

400

0.274 rounded to the nearest tenth

0.3

500

2.064 rounded to the nearest tenth

2.1

Adding and Subtracting Decimals

100

4.16 + 3.87

8.03

200

2.08 + 3.19

5.27

300

4 - 1.7

2.3

400

7.21 - 3.08

4.13

500

5 - 2.72

2.28