Math 8 Review

Exponent Operations

100

When multiplying Powers with the same base you keep the base and _______ the exponents

ADD

200

When Dividing powers with the same base you ________the exponents 

Subtract

300

3² x 3⁴

3⁶

400

5⁸/5²

5⁶

500

5^-7 x 5²

5^-5 or 1/5⁵

Equations

100

2x=24

12

200

2x - 5 = 17

11

300

2(5x + 6) = 42

3

400

3x + 2(2x - 1) = 33

5

500

2(5x - 8)= - 6(x - 8)

4

Angles

100

What angle is supplementary to 120^o

60⁰

200

What angle is Complementary to 42^o

48⁰

300

What are congruent angles across from each other called?

Vertical Angles

400

Two angles in a triangle measure 35⁰ and 80⁰, what is the measure of the third angle?

65⁰

500

Angle A and Angle B are Alternate Interior Angles. If Angle A = 87⁰ what does Angle B equal?

87⁰

Scientific Notation

100

How do you would you write  3 x 10⁵ in standard form?

300,000

200

How do you write 4.56 x 10⁶ in standard form?

4,560,000

300

How do you write 1.2 x 10^-3 in standard form?

0.0012

400

What is the answer in scientific notation
(2 x 10³)(4 x 10⁸)

8 x 10¹¹

500

divide and write your answer in scientific notation

9 x 10³² / 3 x 10¹⁴

3 x 10¹⁸

y=mx+b

100

What is the slope in the equation y=3x + 2

3

200

What is the slope and y-intercept of  y=-4x + 5

Slope: -4
Y-intercept: 5

300

How would you write an equation for this situation: Lydia hired a painter to paint her bedroom. He charged $20 for materials and $12 per hour. 

y = 12x + 20

or 

y = 20 + 12x

400

How can you tell from a graph if it is proportional or not?

Proportional graphs go through the origin

500

Use elimination so solve this system:

2x + 3y =15
  x -  3y = 3

(6,1)