Challenging Maths for Grade 8

What is the value of x in the equation 2x + 3 = 11?

• 7

• 4

• 5

• 2

Calculate the area of a triangle with a base of 10 cm and a height of 5 cm.

• 20 cm²

• 25 cm²

• 15 cm²

• 30 cm²

If a rectangle has a length of 8 cm and a width of 3 cm, what is its perimeter?

• 12 cm

• 18 cm

• 24 cm

• 22 cm

What is the square root of 144?

• 10

• 14

• 16

• 12

Solve for y: 3y - 7 = 2y + 5.

• 5

• 12

• 15

• 10

What is 15% of 200?

• 50

• 25

• 40

• 30

If the angles of a triangle are 50 degrees and 60 degrees, what is the third angle?

• 80 degrees

• 90 degrees

• 100 degrees

• 70 degrees

Convert 0.75 to a fraction in simplest form.

• 4/5

• 3/4

• 1/2

• 2/3

What is the least common multiple (LCM) of 4 and 6?

• 8

• 10

• 14

• 12

If a car travels 60 miles in 1 hour, how far will it travel in 3 hours?

• 120 miles

• 240 miles

• 180 miles

• 90 miles