GCSE · Percentages & growth

Compound growth and decayExam-style questions

Why repeated percentage change is a power of the multiplier, how compound interest differs from simple interest, and how to build growth and decay models.

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19 questions · GCSE (Higher) level · mark scheme and worked solution on each · no sign-up to try

DifficultyAll Level 1 Level 2 Level 3 Level 4 Level 5

1
Write down the multiplier for an increase of $5\%$ .
Level 1 · 1 markTry it
2
£ $200$ is put in a savings account paying $3\%$ simple interest per year. How much interest is earned in $4$ years?
Level 1 · 2 marksTry it
3
Priya invests £ $4000$ in a savings account.

The account pays compound interest at a rate of $2.4\%$ per year.

Work out the value of the investment at the end of $3$ years. (3 marks)
Level 2 · 3 marksTry it
4
£ $500$ is invested at $4\%$ compound interest per year. How much is in the account after $2$ years?
Level 2 · 2 marksTry it
5
A car is bought for £ $15\,000$

Its value depreciates by $12\%$ each year.

Work out the value of the car after $3$ years. (3 marks)
Level 3 · 3 marksTry it

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