WaffleMath LogoWaffleMath
K12345678HSBrowse standardsBrowse worksheetsTeacher resources

Prime & Composite Worksheet

Recommended for 4th Grade — 6th Grade

More Prime & Composite GamesAll Worksheets
New Worksheet

Prime & Composite Worksheet

Name: ____________________Date: ____________

Instructions: Identifying prime and composite numbers and writing prime factorizations.

20 problems

  1. Prime numbers in {13, 23, 25, 5, 19, 21} → ______
  2. Prime numbers in {5, 29, 19, 23, 3, 13} → ______
  3. Prime numbers in {19, 13, 17, 11, 9, 5} → ______
  4. Prime numbers in {15, 21, 7, 5, 12, 2} → ______
  5. Prime numbers in {7, 19, 8, 2, 17, 27} → ______
  6. Prime numbers in {15, 17, 5, 19, 27, 12} → ______
  7. Prime numbers in {5, 17, 3, 23, 21, 27} → ______
  8. Prime numbers in {29, 21, 12, 9, 3, 2} → ______
  9. Prime numbers in {15, 3, 23, 7, 2, 21} → ______
  10. Prime numbers in {23, 12, 19, 7, 2, 15} → ______
  11. Prime numbers in {15, 19, 12, 2, 29, 25} → ______
  12. Prime numbers in {27, 15, 11, 2, 29, 25} → ______
  13. Prime numbers in {21, 5, 19, 13, 23, 3} → ______
  14. Prime numbers in {25, 17, 3, 9, 8, 27} → ______
  15. Prime numbers in {15, 23, 25, 29, 17, 7} → ______
  16. Prime numbers in {7, 12, 3, 29, 9, 23} → ______
  17. Prime numbers in {11, 12, 8, 3, 21, 9} → ______
  18. Prime numbers in {17, 7, 11, 5, 27, 9} → ______
  19. Prime numbers in {2, 7, 3, 13, 25, 29} → ______
  20. Prime numbers in {21, 3, 7, 19, 8, 25} → ______