Review Units 1 & 2

Numbers

100

Which of the following categories does -8 fit into:

integer, rational number, irrational number

Both integer and rational number

200

Order from least to greatest:

-3, √5, -7.82, 0, 2

-7.82, -3, 0, 2, √5

300

Is the √25 rational or irrational? Explain your answer.

Rational because the √25 simplifies to 5, which is a whole number and can be written as a fraction, making it a rational number.

400

Classify -4.75 using the smallest number set it belongs to:natural, whole, integer, rational, or irrational 

rational

500

Order from greatest to least

-2.5, -√9, 1/2, -3.2, 0, 1.01

1.01, 1/2, 0, -2.5, -√9, -3.2

Expressions

100

Evaluate: 8 + 3 * 2

14

200

Evaluate 2x + 5 when x = 4

13

300

Evaluate: 18 ÷ 3 + 2²

10

400

Evaluate 3b - 2a when a = 5 and b = -4

-22

500

Evaluate: 4[3 + 2(5 - 8)]²

36

Absolute Value

100

Evaluate: |-9|

9

200

Evaluate: |6 - 10|

4

300

Evaluate: -|−7| + 12

5

400

Evaluate: |−3| + |−8| − 5

6

500

Evaluate: 2|−5 + 1| − |−3|

5

Equations

100

Solve: x + 7 = 15

x = 8

200

Solve: 4x = 28

x = 7

300

Solve: -3x - 5 = 16

x = -7

400

Solve: 2(x + 4) = 20

x = 6

500

Solve: 5x - 7 = 7x + 14

x = -14

Inequalities

100

Solve: x + 4 > 9

x > 5

200

Solve: -4x ≥ 20

x ≤ -5

300

Solve: 2x - 5 < 9

x < 7

400

Solve: 3(x - 2) + 4 > 16

x > 6

500

Solve: -4(2x - 5) + 1 ≥ 10x - 15

x ≤ 2