Cambridge IGCSE · Mathematics

Percentages and percent change

21 practice questions, each with the answer and an explanation.

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Random questions from this topic, one at a time. You see the answer and the explanation straight after each one.

All 21 questions

  1. What is of ?
  2. What is of ?
  3. What is of ?
  4. What is of ?
  5. A quantity increases from to . By what percent did it increase?
  6. A quantity decreases from to . By what percent did it decrease?
  7. A quantity increases from to . By what percent did it increase?
  8. What is of ?
  9. What is of ?
  10. What is of ?
  11. What is of ?
  12. A quantity increases from to . By what percent did it increase?
  13. A quantity decreases from to . By what percent did it decrease?
  14. A quantity decreases from to . By what percent did it decrease?
  15. A machine loses of its value each year. After years it is worth \17\,036.80$. What was its value when new, in dollars?
  16. What is of ?
  17. A quantity decreases from to . By what percent did it decrease?
  18. A quantity increases from to . By what percent did it increase?
  19. What is of ?
  20. What is of ?
  21. A quantity increases from to . By what percent did it increase?

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