8th Grade Math Review

Expressions & Equations

100

Three more than twice a number.

3 + 2n

200

Simplify:

2 - 3(r + 5)

-3r -13

300

Solve for v:  

3v + 6 = -15

v = -7

400

3m - 17 + 5m - 5

8m - 22

500

4m - 8 = 2m + 8

m = 8

Exponents/Roots

100

8³

512

200

217⁰

1

300

Square Root of 144

12

400

Square Root of 625

25

500

Cube Root of 27

3

Triangles-Angles

100

The Pythagorean Theorem only works for _________ triangles.

Right

200

A triangle has angles of 25 and 72.  What is the measure of the third angle?

83

300

Is the triangle with angles that measure 58, 118, and 62 a right triangle?

Yes

400

Same Side Interior angles are:  Congruent or Supplementary

Supplementary

500

Exterior angle of a triangle with remote interior angles, 53 and 49, is what measure?

78 degrees

Linear Relationships

100

What is the formula for finding slope?

y₂ - y₁ over x₂ - x₁

200

What is the slope-intercept form of a linear relationship?

y = mx + b

300

Find the slope of these two points on a line.  (3, 6) and (-2, 8)

-2/5

400

Write the linear equation of a line with these two points, (0.0) and (5,10).

y = 2x

500

Write the linear equation for the following two points on a line in slope intercept form.  (1,7) and (3,17)

y = 5x + 2

Formulas

100

This formula is for which shape?

V= lwh

Rectangular Prism

200

What is the formula for Volume of a Cylinder?

V = Bh

300

What shape does this formula belong?

V=1/3Bh

Cone

400

If a shape has a round base, which would be needed to find the Volume?  The radius or the diameter?

radius

500

What is the formula for the Pythagorean Theorem?

a² + b² = c²