Grade 8 Math

Fractions, Decimals, and Percentages

100

Add 2/3 + 3/4

1+5/12 (17/12)

200

Divide 3.6 by 0.6

6

300

Convert 0.48 to a fraction in its simplest form

12/25

400

Express 11/40 as a percentage

27.5%

500

A shopkeeper gives 15% discount on an item priced at $240. Find the selling price.

$204

Algebra and Equations

100

Solve 3x - 4 = 11

x = 5

200

(x²)³ * x⁴

x¹⁰

300

If a = 2 and b= -3, evaluate
2a²b - 3 ab²

-78

400

Expand (x-4)(x+6)

x² + 2x - 24

500

Solve 4(x + 2) = 3(x - 5)

x = -23

Geometry

100

What is the sum of the angles in a quadrilateral?

360^o

200

What is the volume of a cube with a side length of 5cm?

125 cm³

300

Find the perimeter of a rectangle with length 12 cm and width 8 cm. 

40 cm

400

Find the area of a parallelogram with base 12 cm and height 8 cm.

96 cm²

500

The ratio of the angles of a triangle is 2:3:4. Find the angles.

40^o, 60^o, 80^o

Data and Probability

100

What is the mode of 2, 4, 5, 6, 4, 3, 2, 7, 4, 1

4

200

Find the mean of 10, 15, 20.

15

300

A dice is rolled. Find the probability of getting an even number?

1/2

400

In a class of 20 students, 12 are girls. What is the probability of picking a boy?

8/20 = 2/5

500

The mean of 5 numbers is 12. If four numbers are 10, 8, 15, 9, find the fifth number.

18

Word Problems

100

A shop sells 3 pencils for $1.50. How much will 10 pencils cost?

$5.00

200

A car travels 150 km in 3 hours. Find its speed in km/h.

50 km/h

300

A tank is 60% full with 120 liters of water. What is the capacity? 

200 liters

400

A man spends 30% of his salary on rent and 20% on food. If his salary is $2000, how much is left?

$1000

500

A map has a scale of 1:50,000. If two towns are 8 cm apart on the map, what is the actual distance in km?

4 km