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Year 6 · Multiplication

Square roots

A square number is a number times itself. A square root undoes it.

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How to do it

  1. Squares: 1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144.
  2. Cubes: 1, 8, 27, 64, 125.
  3. The root asks which number was squared or cubed.

Worked example

8³ = ?
8³ means 8 × 8 × 8 = 512.
Answer: 512

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Learn the square numbers to 12² = 144.

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