GCSE Maths Foundation

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.

Sample questions

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.

  1. What is 1/4 as a decimal?

    • A0.14
    • B0.25
    • C0.4
    • D0.5

    Answer: 1/4 = 1 ÷ 4 = 0.25.

  2. 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.

  3. 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.

  4. What is 3/5 as a percentage?

    • A35%
    • B53%
    • C60%
    • D80%

    Answer: 3/5 = 0.6 = 60/100 = 60%.

  5. 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.

  6. 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.

  7. 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.

  8. 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.

  9. 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.

  10. What is 3/8 as a decimal?

    • A0.3
    • B0.375
    • C0.38
    • D0.83

    Answer: 3/8 = 3 ÷ 8 = 0.375.

  11. 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.

  12. What is 0.05 as a percentage?

    • A5%
    • B0.5%
    • C50%
    • D0.05%

    Answer: 0.05 = 5/100 = 5%.

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