O-Level Mathematics 6

Question 1

What is the volume of a cuboid with length 5 cm, width 3 cm, and height 4 cm?

Accepted Answer

60 cm³

Answer

Volume = l × w × h = 5 × 3 × 4 = 60 cm³.

Question 2

Simplify the fraction 36/48.

Accepted Answer

3/4

Answer

HCF of 36 and 48 is 12. 36÷12 = 3, 48÷12 = 4. Simplified: 3/4.

Question 3

A shopkeeper buys an item for $60 and sells it at a 25% profit. What is the selling price?

Accepted Answer

$75

Answer

Profit = 25% of $60 = $15. Selling price = $60 + $15 = $75.

Question 4

What is the gradient of a horizontal line?

Accepted Answer

0

Answer

A horizontal line has no rise (change in y = 0), so the gradient = 0/run = 0.

Question 5

Evaluate: (-3)² + 4 × 2

Accepted Answer

17

Answer

(-3)² = 9. 4 × 2 = 8. 9 + 8 = 17. Following BODMAS, powers and multiplication before addition.

GCE O-Level Practice Test