8th Grade Math Midterm Review

Order of Operations

100

8 - 6 / 2

5

200

3 x 3 - 15 / 5

6

300

2 x (16 - 4) / 8 

3

400

8 - (3 x 4) + 6

2

Simplifying Expressions

100

-3x + x + 8 - 7

-2x + 1

200

w - 5 + 3w + 8

4w + 3

300

4(3f - 8)

12f - 32

400

-2(r + 3) + 6(3r - 7)

16r - 48

Solving Equations

100

-8p = 64

p = -8

200

h/-7 = -4

h = 28

300

2x - 4 = -12

x = -4

400

-3 - 17x = 52 - 6x

x = -5

Finding Slope

100

Find the slope: y = -4x + 5

-4

200

Find the slope from 2 points: (2, 4) & (5, 7)

1

300

Find the slope from 2 points: (2, 3) & (6, 4)

1/4

400

Find the slope from 2 points: (-4, 3) & (6, 3)

0

Finding Intercepts/Misc

100

Find the intercepts: 2x + y = -4

x = -2

y = -4

200

Find the intercepts: x + 4y = -12

x = -12

y = -3

300

Evaluate for x = 2 and y = -3: 5x - 4y

22

400

Solve the system of equations: 

-4x + 2y = -30

4x + 8y = 20

(7, -1)