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Practise online insteadThe answer key prints on page 2.

Solve equations with cubes

Year 8 maths · Fieldbook Learning

Name ______________________ Date __________

Take the root of both sides to undo the power.

  1. Solve x³ = 125.
  2. Solve n³ = 8.
  3. Solve n³ = −729.
  4. Solve y³ = 27.
  5. Solve a³ = 125.
  6. Solve y³ = −1728.
  7. Solve a³ = 216.
  8. Solve y³ = 8.
  9. Solve y³ = −343.
  10. Solve a³ = 1000.
  11. Solve y³ = −2744.
  12. Solve a³ = −125.
  13. Solve y³ = 343.
  14. Solve a³ = 343.
  15. Solve y³ = 512.
  16. Solve y³ = 1000.
  17. Solve n³ = 4913.
  18. Solve n³ = 343.
  19. Solve a³ = 1331.
  20. Solve y³ = 13824.
More free practice: fieldbooklearning.com/au/practice/year-8/solve-equations-with-cubes/

Play it as a quiz game

15 of these questions as multiple choice, with near-miss wrong answers, ready for Kahoot or Blooket.

  1. Download the game's own question template: in Kahoot, Add question → Import spreadsheet; in Blooket, Create a set → Spreadsheet import.
  2. Click the matching button below, then click the first empty question row of the template and paste.
  3. Save the template (Kahoot needs .xlsx, Blooket .csv) and upload it.
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Answer key: Solve equations with cubes

  1. 5
  2. 2
  3. -9
  4. 3
  5. 5
  6. -12
  7. 6
  8. 2
  9. -7
  10. 10
  11. -14
  12. -5
  13. 7
  14. 7
  15. 8
  16. 10
  17. 17
  18. 7
  19. 11
  20. 24