NumberKey Stage 3

Cube roots

Evaluate the cube root of a perfect cube.

  • A cube root reverses cubing.
  • Find the number that appears in three identical factors.
  • Check by cubing the answer.

Example 1

Evaluate.

Find the number whose cube is the number under the root sign.

Example 2

Evaluate.

Find the number whose cube is the number under the root sign.

Remember
Check by cubing the answer.

Your turn

Question 1

Evaluate.

Check answer

Find the number whose cube is the number under the root sign.

Question 2

Evaluate.

Check answer

Find the number whose cube is the number under the root sign.

Question 3

Evaluate.

Check answer

Find the number whose cube is the number under the root sign.

Question 4

Evaluate.

Check answer

Find the number whose cube is the number under the root sign.

Question 5

Evaluate.

Check answer

Find the number whose cube is the number under the root sign.

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