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GCSE Foundation Percentage Revision Sheet

GCSE FoundationRevision15 questions

Free to print and use in your classroom. No sign-up required.

Formula Reminders

Percentage of an amount

Amount × (percentage ÷ 100)

e.g. 30% of 200 = 200 × 0.30 = 60

Percentage increase / decrease

New value = Original × multiplier

e.g. 20% increase: multiply by 1.20

Percentage change

(Change ÷ Original) × 100

Reverse percentage

Original = Final ÷ multiplier

e.g. after 20% increase, divide by 1.20

Answer all 15 questions. Show your working clearly. A calculator may be used.

  1. Calculate 20% of 350.

  2. Calculate 45% of 160.

  3. Increase £240 by 10%.

  4. Decrease 850 by 20%.

  5. Express 24 out of 60 as a percentage.

  6. A coat costs £75 in a 25% off sale. What was the original price?

  7. A train ticket costs £18.00 and rises to £21.60. Calculate the percentage increase.

  8. A school has 800 pupils. 55% of them are girls. How many boys are there?

  9. A phone is reduced by 15% to £255. What was the original price?

  10. Increase £1,400 by 5%.

  11. A painting is bought for £200 and sold for £270. Calculate the percentage profit.

  12. Electricity bills rise by 8%. Before the rise, a bill was £125. What is the new bill?

  13. The price of a house falls from £250,000 to £235,000. Calculate the percentage decrease.

  14. A shop reduces all prices by 30%. A pair of shoes now costs £49. What was the original price?

  15. A worker earns £420 per week. They receive a 6.5% pay rise. What is their new weekly wage?

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Worked Answers

  1. Q1: 0.20 × 350 = 70
  2. Q2: 0.45 × 160 = 72
  3. Q3: £240 × 1.10 = £264
  4. Q4: 850 × 0.80 = 680
  5. Q5: (24 ÷ 60) × 100 = 40%
  6. Q6: £75 = 75%. Original = £75 ÷ 0.75 = £100
  7. Q7: Increase = £21.60 − £18.00 = £3.60. Percentage increase = (3.60 ÷ 18.00) × 100 = 20%
  8. Q8: Girls = 55% of 800 = 440. Boys = 800 − 440 = 360
  9. Q9: £255 = 85%. Original = £255 ÷ 0.85 = £300
  10. Q10: £1,400 × 1.05 = £1,470
  11. Q11: Profit = £270 − £200 = £70. Percentage profit = (70 ÷ 200) × 100 = 35%
  12. Q12: £125 × 1.08 = £135
  13. Q13: Decrease = £250,000 − £235,000 = £15,000. Percentage decrease = (15,000 ÷ 250,000) × 100 = 6%
  14. Q14: £49 = 70%. Original = £49 ÷ 0.70 = £70
  15. Q15: £420 × 1.065 = £447.30

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