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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 337 · 40 questions
TalentJR

The method (Divide by the HCF): Find the HCF (highest common factor) of the top and the bottom. Divide the top and the bottom by the HCF. If the HCF is 1, the fraction is already in its simplest form.

NameDateTime takenScore ___ / 40
  1. 1.Write 24/54 in its simplest form. =
  2. 2.What is the HCF of 40 and 45?
  3. 3.What is the HCF of 6 and 12?
  4. 4.What is the HCF of 21 and 28?
  5. 5.What is the HCF of 36 and 42?
  6. 6.Is 9/10 in its simplest form? (a) Yes (b) No
  7. 7.Is 1/2 in its simplest form? (a) No (b) Yes
  8. 8.Is 3/7 in its simplest form? (a) Yes (b) No
  9. 9.Is 4/9 in its simplest form? (a) No (b) Yes
  10. 10.Is 20/36 in its simplest form? (a) Yes (b) No
  11. 11.Is 12/14 in its simplest form? (a) Yes (b) No
  12. 12.What is the HCF of 24 and 40?
  13. 13.Is 16/20 in its simplest form? (a) Yes (b) No
  14. 14.Is 6/10 in its simplest form? (a) Yes (b) No
  15. 15.Write 12/32 in its simplest form. =
  16. 16.Write 21/70 in its simplest form. =
  17. 17.What is the HCF of 10 and 25?
  18. 18.Is 24/42 in its simplest form? (a) No (b) Yes
  19. 19.What is the HCF of 21 and 35?
  20. 20.What is the HCF of 18 and 81?
  21. 21.Is 21/24 in its simplest form? (a) No (b) Yes
  22. 22.What is the HCF of 6 and 8?
  23. 23.Write 16/72 in its simplest form. =
  24. 24.Write 10/25 in its simplest form. =
  25. 25.What is the HCF of 27 and 90?
  26. 26.What is the HCF of 7 and 28?
  27. 27.What is the HCF of 14 and 16?
  28. 28.Is 2/3 in its simplest form? (a) No (b) Yes
  29. 29.Is 7/9 in its simplest form? (a) Yes (b) No
  30. 30.What is the HCF of 16 and 28?
  31. 31.Is 3/8 in its simplest form? (a) No (b) Yes
  32. 32.Is 28/40 in its simplest form? (a) No (b) Yes
  33. 33.Is 18/30 in its simplest form? (a) Yes (b) No
  34. 34.What is the HCF of 3 and 12?
  35. 35.Write 2/18 in its simplest form. =
  36. 36.What is the HCF of 12 and 32?
  37. 37.Write 27/36 in its simplest form. =
  38. 38.What is the HCF of 3 and 18?
  39. 39.What is the HCF of 10 and 14?
  40. 40.What is the HCF of 14 and 21?

Answer key

  1. 4/9
  2. 5
  3. 6
  4. 7
  5. 6
  6. Yes
  7. Yes
  8. Yes
  9. Yes
  10. No
  11. No
  12. 8
  13. No
  14. No
  15. 3/8
  16. 3/10
  17. 5
  18. No
  19. 7
  20. 9
  21. No
  22. 2
  23. 2/9
  24. 2/5
  25. 9
  26. 7
  27. 2
  28. Yes
  29. Yes
  30. 4
  31. Yes
  32. No
  33. No
  34. 3
  35. 1/9
  36. 4
  37. 3/4
  38. 3
  39. 2
  40. 7

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