PassNova has 9 free KS3 Maths practice questions on Number, each with a clear explanation. Practise them in the browser with instant feedback — 100% free, no sign-up, on any device. Updated for 2026.
Number: example questions & answers
9 worked examples with answers and explanations below. Practise them in the browser with instant feedback on every answer.
What is 7 × 8?
- A54
- B56✓
- C63
- D49
Answer: 7 × 8 = 56. A key times-table fact to know by heart.
What is the value of 3² + 4²?
- A14
- B25✓
- C49
- D7
Answer: 3² = 9 and 4² = 16, so 9 + 16 = 25.
Write 0.75 as a fraction in its simplest form.
- A7/5
- B3/4✓
- C75/100
- D1/4
Answer: 0.75 = 75/100 = 3/4 when simplified by dividing top and bottom by 25.
What is the lowest common multiple (LCM) of 4 and 6?
- A24
- B2
- C12✓
- D10
Answer: Multiples of 4: 4, 8, 12… Multiples of 6: 6, 12… The lowest common multiple is 12.
What is 15% of 200?
- A15
- B30✓
- C3
- D35
Answer: 10% of 200 = 20, and 5% = 10, so 15% = 20 + 10 = 30.
What is −6 + 10?
- A−16
- B4✓
- C−4
- D16
Answer: Starting at −6 and adding 10 moves up the number line to 4.
Round 4,672 to the nearest hundred.
- A4,600
- B4,700✓
- C4,670
- D5,000
Answer: The tens digit is 7, so we round up: 4,672 → 4,700.
What is the cube root of 27?
- A3✓
- B9
- C6
- D13.5
Answer: 3 × 3 × 3 = 27, so the cube root of 27 is 3.
What is −4 × −3?
- A−12
- B12✓
- C−7
- D7
Answer: A negative multiplied by a negative gives a positive: −4 × −3 = 12.