GCSE · Percentages & growth

Percentage change and multipliersExam-style questions

Why every percentage increase or decrease is a single multiplication, how to build the multiplier, and why "percentage change" is always measured against the original amount.

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

DifficultyAllLevel 1Level 2Level 3Level 4Level 5
  1. 1
    A town's population is 20 00020\,000.

    One year it increases by 10%10\%. The next year it decreases by 10%10\%.

    (a) Work out the population after the two changes.

    (b) Tom says the population is back where it started. Explain why Tom is wrong.
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