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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 675 · 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.Is 5/8 in its simplest form? (a) Yes (b) No
  2. 2.Is 8/14 in its simplest form? (a) No (b) Yes
  3. 3.What is the HCF of 3 and 12?
  4. 4.What is the HCF of 7 and 70?
  5. 5.Is 4/7 in its simplest form? (a) No (b) Yes
  6. 6.Write 3/18 in its simplest form. =
  7. 7.What is the HCF of 14 and 21?
  8. 8.Write 24/32 in its simplest form. =
  9. 9.What is the HCF of 4 and 6?
  10. 10.Is 3/12 in its simplest form? (a) Yes (b) No
  11. 11.What is the HCF of 56 and 72?
  12. 12.What is the HCF of 15 and 35?
  13. 13.What is the HCF of 18 and 81?
  14. 14.Write 6/8 in its simplest form. =
  15. 15.What is the HCF of 5 and 40?
  16. 16.Is 5/7 in its simplest form? (a) Yes (b) No
  17. 17.Is 1/3 in its simplest form? (a) No (b) Yes
  18. 18.What is the HCF of 6 and 8?
  19. 19.Is 20/25 in its simplest form? (a) No (b) Yes
  20. 20.Is 40/45 in its simplest form? (a) No (b) Yes
  21. 21.What is the HCF of 24 and 40?
  22. 22.What is the HCF of 9 and 24?
  23. 23.Is 5/9 in its simplest form? (a) Yes (b) No
  24. 24.Is 4/32 in its simplest form? (a) No (b) Yes
  25. 25.What is the HCF of 10 and 12?
  26. 26.What is the HCF of 56 and 80?
  27. 27.What is the HCF of 45 and 81?
  28. 28.What is the HCF of 30 and 42?
  29. 29.Write 35/40 in its simplest form. =
  30. 30.Is 7/8 in its simplest form? (a) No (b) Yes
  31. 31.Is 12/28 in its simplest form? (a) Yes (b) No
  32. 32.Is 5/30 in its simplest form? (a) Yes (b) No
  33. 33.Is 10/15 in its simplest form? (a) Yes (b) No
  34. 34.Write 27/90 in its simplest form. =
  35. 35.Is 15/50 in its simplest form? (a) Yes (b) No
  36. 36.Write 8/40 in its simplest form. =
  37. 37.Write 16/20 in its simplest form. =
  38. 38.Is 36/40 in its simplest form? (a) No (b) Yes
  39. 39.Is 7/10 in its simplest form? (a) Yes (b) No
  40. 40.Is 4/9 in its simplest form? (a) No (b) Yes

Answer key

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

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