Fractions Decimals Percentages
40 free practice questions with explanations
PassNova has 40 free GCSE Maths Foundation practice questions on Fractions Decimals Percentages, each with a clear explanation. Practise them in the browser with instant feedback — 100% free, no sign-up, on any device. Updated for 2026.
Fractions Decimals Percentages: example questions & answers
12 worked examples with answers and explanations below. Practise all 40 Fractions Decimals Percentages questions free in the browser, with instant feedback on every answer.
What is 1/4 as a decimal?
- A0.14
- B0.25✓
- C0.4
- D0.5
Answer: 1/4 = 1 ÷ 4 = 0.25.
What is 0.6 as a fraction in its simplest form?
- A6/10
- B3/5✓
- C6/100
- D60/100
Answer: 0.6 = 6/10. Simplify by dividing by 2: 6/10 = 3/5.
What is 25% as a decimal?
- A2.5
- B25
- C0.25✓
- D0.025
Answer: Percentage means 'out of 100'. So 25% = 25/100 = 0.25.
What is 3/5 as a percentage?
- A35%
- B53%
- C60%✓
- D80%
Answer: 3/5 = 0.6 = 60/100 = 60%.
Calculate 1/3 + 1/6.
- A2/9
- B1/2✓
- C2/6
- D5/6
Answer: Find common denominator: 1/3 = 2/6. So 2/6 + 1/6 = 3/6 = 1/2.
Calculate 3/4 × 2/5.
- A6/15
- B3/10✓
- C5/9
- D6/9
Answer: Multiply numerators and denominators: (3 × 2)/(4 × 5) = 6/20 = 3/10.
Calculate 2/3 ÷ 1/2.
- A2/6
- B1/3
- C4/3✓
- D1/6
Answer: Flip the second fraction: 2/3 ÷ 1/2 = 2/3 × 2/1 = 4/3.
What is 10% of £80?
- A£8✓
- B£18
- C£80
- D£800
Answer: 10% = 10/100 = 1/10. 1/10 of £80 = £80 ÷ 10 = £8.
A shirt costs £20. It is reduced by 20%. What is the new price?
- A£4
- B£16✓
- C£18
- D£12
Answer: 20% of £20 = 0.2 × £20 = £4. New price = £20 - £4 = £16.
What is 3/8 as a decimal?
- A0.3
- B0.375✓
- C0.38
- D0.83
Answer: 3/8 = 3 ÷ 8 = 0.375.
Calculate 1/2 + 1/4 + 1/4.
- A3/8
- B1✓
- C3/4
- D2/8
Answer: 1/2 = 2/4. So 2/4 + 1/4 + 1/4 = 4/4 = 1.
What is 0.05 as a percentage?
- A5%✓
- B0.5%
- C50%
- D0.05%
Answer: 0.05 = 5/100 = 5%.