Square and cube numbers · seed 1 · A4, ink-friendly. The answer key prints on its own page for grown-ups.

Square and cube numbers

Mathematics · Multiplication & Division · ages 9-10
Name ______________________   Date ____________

  1. Which of these shows 49 as a square number?

    • 9 squared
    • 5 squared
    • 7 squared
    • 8 squared

  2. What is 7 x 7?

    Answer: ______________

  3. What is 7²?

    • 14
    • 49
    • 77

  4. 3³ means 3 × 3 × 3.

    Circle one:   True   False

  5. What is 4 cubed?

    • 12
    • 16
    • 48
    • 64

  6. The first square numbers are 1, 4, 9, 16, ... What comes next?

    14916?
    • 20
    • 25
    • 36

  7. Which is the correct way to calculate 5³?

    • 5 × 5
    • 5 × 3
    • 5 × 5 × 5

  8. Which of these is NOT a square number?

    • 16
    • 18
    • 25
    • 36

  9. The 8th square number is 64, because 8 × 8 = 64. What is the 9th square number?

    Answer: ______________

  10. What is 9 squared plus 2 cubed?

    • 83
    • 89
    • 97
    • 99
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Answer key

For grown-ups. Fold this page away before handing over the rest.

Square and cube numbers W1-mt_gxCIASSezX-s1

  1. 7 squared · 7 squared means 7 x 7 = 49.
  2. 49 · 7 x 7 = 49.
  3. 49 · 7² means 7 × 7, which is 49.
  4. True · The little 3 tells you to multiply the number by itself three times.
  5. 64 · 4 cubed means 4 x 4 x 4 = 64.
  6. 25 · The next square number is 5² = 25, so the list goes 1, 4, 9, 16, 25.
  7. 5 × 5 × 5 · 5³ means multiply 5 by itself three times: 5 × 5 × 5 = 125. 5 × 5 alone is only 5².
  8. 18 · 18 is not a square: 16 = 4 x 4, 25 = 5 x 5 and 36 = 6 x 6.
  9. 81 · The 9th square number is 9 × 9 = 81. Each square number comes from multiplying its position by itself.
  10. 89 · 81 + 8 = 89.
Worksheet · LightMySky