8th Grade Math Review

Integers

100

742-375=?

367

200

200-348=?

-148

300

-83-59=?

-142

400

-49+102=?

53

500

−10(1+ 4) − 5

-55

Precents

100

What is 5% as a decimal?

0.05

200

Amanda got a 21/28 on her test. What is her percent score?

75%

300

What is 25% of 60?

15

400

A restaurant bill comes to $34.60. You decide to leave an 15% tip. What is the total cost of the bill?

$39.79

500

Kim bought a hat in California. The hat cost $15 before the 8% sales tax was applied. How much did Kim pay for the hat after taxes were added?

Kim paid $16.20

Ratios

100

Skyzone sells tickets for their jump area. You buy a ticket for 4 hours and it costs $24. How much are you paying per hour to jump?

$6

200

What is the unit rate of the ratio 6:42 (6/42)?

1:7 or 1/7

300

Blake is able to get 27 miles on 1 tank of gas. How many miles can Blake travel on 6 tanks of gas?

162 miles

400

A toy company can produce 9 toys in 3 hours. How many toys can they produce in 24 hours?

72 toys

500

You paid $28.00 for 8 gallons of gasoline. How much would you pay for 15 gallons of gasoline?

You would pay $52.50

Equations

100

Solve for n. 2n=12

n=6

200

Solve for n. 3n + 5 = 23

n=6

300

Solve for n. 5n+35=60

n=5

400

Solve for n. 5n-10=13+2

n=5

500

5n + 4 = 10n - 6

n = 2

Geometry

100

What is the area of a circle?

A = (pi)r^2 

200

The radius of a circle is 12in. What is the area of the circle?

144pi in.

300

A rectangle has a length of 12 units and a width of 5 units. What is the perimeter?

34 units

400

A triangle has a base of 10 cm and a height of 6 cm. What is the area?

Area: 30 square cm

500

The perimeter of a rectangle is 36 cm. The length is 10 cm. What is the missing width?

8 cm