O level Maths(4024) Introductory Test 1

Calculate 25% of 80.

• 10

• 20

• 30

• 15

If 40% of a number is 60, what is the number?

• 200

• 150

• 90

• 120

Solve for x: 3x + 5 = 17.

• x = 6

• x = 10

• x = 3

• x = 4

Factorize the expression: 4x² - 9.

• (4x - 3)(4x + 3)

• (2x + 4)(2x - 3)

• (2x + 3)(2x + 3)

• (2x + 3)(2x - 3)

Simplify the expression: 2(3x + 4) - x(2 - 5).

• 5x + 6

• 6x + 8

• x + 2

• 4x + 13

Make x the subject in the equation: 2y = 3x + 5.

• x = 2y - 3 / 5

• x = (2y - 5) / 3

• x = (2y + 5) / 3

• x = 3(2y - 5)

What is 15% of 200?

• 25

• 30

• 40

• 20

If 20% of a number is 30, what is the number?

• 150

• 120

• 200

• 50

Find the value of x: 2x - 7 = 11.

• 3

• 9

• 13

• 5

Factorize the expression: x²- 4.

• (x + 2)(x - 2)

• (x + 4)(x - 1)

• (x - 3)(x + 1)

• (x^2 - 4)