Prime or composite numbers?

Chalkplay teamMathsGrades 3–520 itemsSpeed sort makerEnglish
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Speed sort
3PrimeComposite

Game options Saved per activity

For Speed sort. Sound and theme change straight away; other options start the game again.

Questions and answers

· 20 itemsShow answers

Prime

  1. 2
  2. 3
  3. 5
  4. 7
  5. 11
  6. 13
  7. 17
  8. 19
  9. 23
  10. 29

Composite

  1. 4
  2. 6
  3. 9
  4. 15
  5. 21
  6. 25
  7. 27
  8. 33
  9. 49
  10. 51

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