Percentages GCSE questions
Percentages GCSE questions: of an amount, increase and decrease, reverse percentages and compound interest.
Use multipliers
20% off → × 0.8. Reverse a 20% increase → ÷ 1.2.
Practice questions
Cover the answers and have a go first. Worked solutions are underneath.
15% of 360
Increase 80 by 25%
Decrease £90 by 10%
After 25% off, price is £45. Original?
£500 at 4% compound for 2 years
Common mistakes
- Reverse percentages: subtracting the percentage of the new amount.
Answers and working
Frequently asked questions
Simple or compound?
Compound if the interest is added and then earns interest. The question will say “compound”.
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