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