8th Grade Math Review

Solving Equations Using + 0r -

100

x + 5 = 12

What is x = 7

200

- 2 + x= 10

What is x = 12

300

x - 0.5 = 9

What is x = 9.5

400

x - 2(pi) = 3(pi)

What is 5(pi)

500

What is x - (-5) = 10

What is x = 10

Solving Equations Using X or /

100

5x = 20

What is x = 4

200

0.09y = 1.8

What is y = 20

300

k/4 = -7

What is k = -28

400

(-2/3)b = 6

What is b = -9

500

(pi)x = 3(pi)

What is x = 3

Solving a Two Step Equation

100

3x + 15 = 24

What is x = 3

200

2a - 1 = -5 

What is a = -2

300

-3c + 1 = 7

What is c = -2

400

0.5m - 9 = -25

What is m = -32

500

0.3k - 3.6 = -5.4

What is k = -6

Solving a Multi Step Equation

100

8x - 6x - 25 = -35

What is x = -5

200

-4n - 8n + 17 = 23

What is n = -0.5

300

10 = 3n + 20 - n

What is n = -5

400

2y + 10y - 30 = 18

What is y = 4

500

1.9x - 0.8x + 4.1 = 6.3

What is x = 2

Solving Using the Distributive Property

100

2(1 - 5x) + 4 = -8

What is x = 1.4

200

-3(x + 2) + 5x = -9

What is x = -1.5

300

5 + 1.5(2d - 1) = 0.5

d = -1

400

2(k + 2) - 3k = 3.5

What is k = 0.5

500

2(3x + 3) -2x = -10

What is x = -4