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