Grade 8 Math Review

Slope!

100

What is slope intercept formula?

y=mx+b

200

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

m

300

What do you graph first when graphing slope intercept form?

The y-intercept or the b

400

What is the slope of y=7x+12

7

500

Write an example of a negative and positive slope.

Positive- y=3x+10

Negative- y=-4x+10

Exponents

100

What is 1,0000⁰

1

200

Solve: 7²

49

300

2⁵ x 2³

2⁸=256

400

Simplify:

x³ * x⁵ ÷ x²

x⁶

500

2^-4=

1/16

Equations

100

3x+1=13

x=4

200

Solve: 2(3x-5)=14

x=4

300

Using substitution, solve for x and y. 

x=2, 2x+3y=13

(2,3)

400

Using elimination, solve for x and y.

4x-y=13

x+y=17

(6, 11)

500

Are these equations one solution, no solution, or infinitely many solutions?

y=5x+4

y=5x-2

No solution

Geometry

100

All triangles should add up to what degree?

180 degrees

200

What is the angle measure of a straight line?

180 degrees

300

Two inside angles of the triangle are 60 and 30 degrees. What is the third side?

90 degrees

400

One angle is 2x. Another angle is 2x-20. The angles together are supplementary. Solve for x.

x=50

500

What is the mean, median, mode, and range of the following numbers: 62, 34, 75, 47, 81, 75, 67

mean- 63, mode- 75, median- 67, range- 47

Fractions

100

1/2 ÷ 1/4 =

1/2 * 4/1 =

4/2 =

2

200

3/4 x 5/8 = 

15/32

300

1/2 + 1/3 =

3/6 + 2/6 = 

5/6

400

Use <,>,or = to compare:

1/2 ___ 8/16

=

500

5/7-1/3=

 8/21

Ms. Guio

100

How old is Ms. Guio?

24

200

What grades did Ms. Guio student teach in?

7th and 8th

300

How many siblings does Ms. Guio have?

2

400

What does Ms. Guio's parents do for their job?

Mom- doctor 

Dad- bottle cap engineer

500

True of False- Ms. Guio has climbed a waterfall in Jamaica? 

True