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Cube roots of perfect cubes

Grade 8 math · Fieldbook Learning

Name ______________________ Date __________

Find the number that multiplied by itself three times gives the number inside the root.

  1. Find ∛64.
  2. Find ∛729.
  3. What number cubed equals −64?
  4. What number cubed equals 343?
  5. Find ∛216.
  6. What is the cube root of 64?
  7. Find ∛1000.
  8. Find ∛1728.
  9. What number cubed equals −2744?
  10. What is the cube root of −1728?
  11. Find ∛−3375.
  12. What number cubed equals 27?
  13. What number cubed equals −8?
  14. What is the cube root of 343?
  15. What is the cube root of −729?
  16. What number cubed equals 1331?
  17. What number cubed equals 1728?
  18. What number cubed equals 2197?
  19. What number cubed equals −19683?
  20. Find ∛−4913.
More free practice: fieldbooklearning.com/ca/practice/grade-8/cube-roots-of-perfect-cubes/

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Answer key: Cube roots of perfect cubes

  1. 4
  2. 9
  3. -4
  4. 7
  5. 6
  6. 4
  7. 10
  8. 12
  9. -14
  10. -12
  11. -15
  12. 3
  13. -2
  14. 7
  15. -9
  16. 11
  17. 12
  18. 13
  19. -27
  20. -17