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Factors, multiples and primes worksheet

Beginner · 24 problems with a full answer key. Free to print, free to copy, and nothing to sign up for.

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Factors, multiples and primes practice

Both questions, to fifty · beginner
Name Date

Show your working. The answer key is on the next page.

  1. 1. How many factors does 33 have?
  2. 2. How many factors does 34 have?
  3. 3. Is 23 a prime number?
  4. 4. Is 41 a prime number?
  5. 5. Is 17 a prime number?
  6. 6. Is 11 a prime number?
  7. 7. Is 15 a prime number?
  8. 8. How many factors does 42 have?
  9. 9. How many factors does 50 have?
  10. 10. Is 33 a prime number?
  11. 11. Is 39 a prime number?
  12. 12. Is 6 a prime number?
  13. 13. Is 43 a prime number?
  14. 14. Is 29 a prime number?
  15. 15. How many factors does 9 have?
  16. 16. How many factors does 46 have?
  17. 17. Is 13 a prime number?
  18. 18. Is 36 a prime number?
  19. 19. How many factors does 23 have?
  20. 20. Is 37 a prime number?
  21. 21. How many factors does 3 have?
  22. 22. Is 50 a prime number?
  23. 23. Is 7 a prime number?
  24. 24. Is 5 a prime number?
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Factors, multiples and primes practice

Both questions, to fifty · beginner
Name Date
Answer key
  1. 1. How many factors does 33 have? 4
  2. 2. How many factors does 34 have? 4
  3. 3. Is 23 a prime number? yes
  4. 4. Is 41 a prime number? yes
  5. 5. Is 17 a prime number? yes
  6. 6. Is 11 a prime number? yes
  7. 7. Is 15 a prime number? no
  8. 8. How many factors does 42 have? 8
  9. 9. How many factors does 50 have? 6
  10. 10. Is 33 a prime number? no
  11. 11. Is 39 a prime number? no
  12. 12. Is 6 a prime number? no
  13. 13. Is 43 a prime number? yes
  14. 14. Is 29 a prime number? yes
  15. 15. How many factors does 9 have? 3
  16. 16. How many factors does 46 have? 4
  17. 17. Is 13 a prime number? yes
  18. 18. Is 36 a prime number? no
  19. 19. How many factors does 23 have? 2
  20. 20. Is 37 a prime number? yes
  21. 21. How many factors does 3 have? 2
  22. 22. Is 50 a prime number? no
  23. 23. Is 7 a prime number? yes
  24. 24. Is 5 a prime number? yes
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Standards this covers

  • 4.OA.B.4

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