Grade 8 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 slope of the line?

2 or 6/3

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 5.76 10⁴  in standard form

57,600

400

What is 81 x 54?

4,374

500

A cone has a height of 3.38 inches and a diameter of 4.25 inches. What is the volume, in cubic inches, of the cup? Round your answer to the nearest hundredth.

15.98 cubic inches

8th Grade Math 3

100

3x+1=13

x=4

200

(−7) + (−6) =

−13

300

612,532 + 44,622

657,154

400

1/2 + 1/3 =

3/6 + 2/6 = 

5/6

500

Simplify: 

4x − 3y − 9x + 5y

−5x + 2y

8th Grade Math 4

100

-5+7

2

200

Simplify:

-5x+2x-y

-3x-y

300

What is 210 divided by 5?

42

400

1/2 ÷ 1/4 =

1/2 * 4/1 =

4/2 =

2

500

The chocolate bar is 65 pennies. How is 65 pennies represented as a decimal and fraction? 

0.65 and 65/100

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

Use <,>,or = to compare:

1/2 ___ 8/16

=

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

(-11) * (-3)

33

200

What is the slope of y=7x+12

7

300

Simplify:

x³ * x⁵ ÷ x²

x⁶

400

What is the angle measure of a straight line?

180 degrees

500

Find the surface area of a rectangular prism with a length of 5cm, a width of 2cm and a height of 3cm.

62 cm²