Unit 3 Review

Expressions/Vocab

100

Simplify the following:

2x + 3y - 16 + 5 - y

2x + 2y -11

200

This type of math problem has an equal sign.

Equation

300

Another word for the number that is attached to the variable in an expression or equation

Coefficient

400

Another word for the letters used in expressions and equations.

Variable

WILD CARD - BONUS 100 POINTS - IF CORRECT

500

Simplify the following expression:

-(-9x + 1 - 10y)

9x - 1 + 10y

One-Step Equations

100

4 = -8 + x

x= 12

200

x + 12 = 0

x= -12

300

3 = -2 – x

x= -5

400

-5x = -80

x= 16

500

w/4 = -8

w = -32

Two-Step Equations

100

6x – 13 = 11

x= 4

200

3x + 5 = 14

x= 3

300

(x/2) +10=-8

x= -36

WILD CARD - BONUS 100 POINTS - IF CORRECT

400

1.25x - 3.82 = 7.57

x= 9.112

500

25 = 1/4n - 3

n = 112

Multi-Step Equations

100

Solving Equations

4x + 3 = 7

x = 1

200

Solving Equations

4(6 + 5x) = 124

x = 5

300

Solving Equations

-108 = -8(x + 6) - 4

x = 7

400

Solving Equations

172 = 5(4a + 6) + 2

a=7

500

Write the equation:
You buy 3 books that each cost the same amount and a magazine, totaling $55.99. The magazine cost $1.99. How much does each book cost?

Solve for 100 BONUS points.  

3b + 1.99 = 55.99

BONUS: 3b + 1.99 = 55.99
                  -1.99       -1.99

3b = 54.00

3b/3 = 54.00/3

b = 18   Each book costs $18.00.

Multi-Step Equations w/ Variables on Both Sides

100

Solving Equations

5n - 2 = 8n - 14

n = 4

200

Solving Equations

-4(-8p + 1) = -4 - 8p

p = 0

300

Solving Equations

6(6n - 2) = 8n - 40

n = -1

400

Solving Equations

5x + 5 + 4x = 4 - 3x + 6

x= 5/12    or    x= 0.41667

WILD CARD - BONUS 100 POINTS - IF CORRECT

500

 2x - 4 = 3x + 2(x - 3) 

x= 2/3