8th Grade 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 slope of a line?

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

400

Write the equation of the line shown below:

y=2x + 2

500

What is the slope for this line?

3

8th Grade Math 2

100

a⁷⋅a⁻⁷

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

What is the slope of  2y=7x+12

7/2

500

How many solutions does the system have:
3x − 7x + 1 = −4x + 5

Infinite, one, or no solutions

The system has no solutions.

8th Grade Math 3

100

Write 0.191919191919... as a fraction

19/99

200

x²=81

+/- 9

300

What two whole numbers is √56 in between and what number is it closer to?

In between 7 and 8. Closer to 7.

400

The vertices of figure PQRS and its image P'Q'R'S' are given below. 

P (2,2), Q(5,2), R(5, 6), S(2,6)

P' (-6,2), Q'(-3,2), R' (-3, 6), S' (-6,6)

PQRS was translated ____ units ______ to create P'Q'R'S'?

8 left

500

An airplane is at 39,000 feet above the ground and begins to descend at a rate of 1,800 feet per minute. Write an equation that represents this.

y=-1800x+39000

8th Grade Math 4

100

Rewrite the expression using only positive exponents. 

5^-12 * 32^-3 * 9^-15

1/(5^12 * 32^3 * 9^15)

200

Simplify:

-5x+2x-y

-3x-y

300

Is the square root of 7 a rational number?

No

400

The front of a hiking tent is shaped like a triangle. The slanted sides are both 5 feet long and the bottom of the tent is 6 feet across. What is the height of the tent in feet at the tallest point?

4

500

Find the volume of a sphere with a 9 foot diameter. Round to the nearest tenth.

381.7 ft³

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

Find the measure of angle E. 

55

400

What is happening from 5 to 15 seconds?
A. Standing Still
B. Constant Speed moving Forward
C. Constant Speed moving Backward
D. Going in a straight line

Standing Still

500

What type of association is shown below?

Negative

8th Grade Math 6

100

Write 0.16666666... as a fraction

1/6

200

What is the slope of y=7x+12

7

300

Simplify:

x³ times x⁵ 

x^8

400

The equation a=50m + 100 represents the amount of money in Malorie's bank account, a, as a function of time, in months, m. 

What is Malorie's beginning amount? 

How much does she add per month?

How much money will Malorie have saved after one year (12 months)?

$100

$50

$700

500

(3.4 x 10⁴) x (3.25 x 10⁶)

1.105 x 10¹¹