Pre Algebra Math Review

8th Grade Math 1

100

What is slope intercept formula?

y=mx+b

200

y=mx+b, what part of the formula is the slope?

m

300

What is the x coordinate for the y-intercept?

x = 0

400

What is the slope of a line?

Rise over Run or change in y over the change in x.

500

What is the y-intercept of the line?

2 

8th Grade Math 2

100

What is 1,0000⁰

1

200

Write the number below in standard notation

.000452

4.52 x 10^-4

300

Write 5.76 x 10⁴  in standard form

57,600

400

If you are solving a multistep equation and get 1=9 how many solutions are there?

None

500

Choose the correct statement:
3x − 7x + 1 = −4x + 5

The system has an infinite number of solutions.

The system has no solutions.

The system has a unique solution.

The system has two possible solutions.

Problem 6

The system has no solutions.

8th Grade Math 3

100

3x+1=13

x=4

200

How many possible outcomes are there if you roll two dice?

36

300

The opposite of squaring a number is taking the...

Square root

400

Two angles, angle A and angle B, are supplementary. If the measure of  angle A is 55 degrees, what is the measure of angle B ?

125

500

What are the 2 requirements of a linear function?

Has to be a line and a function

8th Grade Math 4

100

Can you form a triangle with the lengths 5, 10, and 18? 

Explain your reasoning.

According to the Triangle Inequality Theorem, the sum of the lengths of any two sides of a triangle must be greater than the length of the third side.

10+5>18

200

Simplify:

-5x+2x-y

-3x-y

300

To determine if something is a function do we have to see if the x values or y values repeat?

x values

400

Two angles, angle A and angle B, are complementary. If the measure of  angle A is 37 degrees, what is the measure of angle B ?

53

500

Is the square root of 7 a rational number?

No

8th Grade Math 5

100

All the angles in a triangle should add up to what degrees?

180 degrees

200

What is a rational number?

a number that can be turned into a fraction - but as a decimal, it is either a terminating or repeating decimal.

300

Angle Pairs

1. Find the measure of angle JGH.  Explain or show your reasoning.

   

How many degrees is angle G?

150

400

Solve 2x+15=65

25

500

What is the length of the hypotenuse when the legs are 3 and 4

a²+ b² = c²

3² + 4² = c²

9 + 16 =25

c = 5

8th Grade Math 6

100

Which of the following transformations changes the size of a polygon, producing a similar figure that is not congruent?
A. Translation
B. Rotation
C. Reflection
D. Dilation

Dilation

200

What is the slope of y=7x+12

7

300

Simplify:

x³ times x⁵ 

x^8

400

What is the angle measure of a straight line?

180 degrees

500

If you are solving a multistep equation with variables on both sides and get 4=4, how many solutions are there?

Infinite number of solutions