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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 412 · 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 5/7 in its simplest form? (a) Yes (b) No
  2. 2.Is 2/3 in its simplest form? (a) No (b) Yes
  3. 3.Write 63/72 in its simplest form. =
  4. 4.Is 42/60 in its simplest form? (a) No (b) Yes
  5. 5.Is 2/8 in its simplest form? (a) No (b) Yes
  6. 6.What is the HCF of 8 and 48?
  7. 7.Is 20/25 in its simplest form? (a) No (b) Yes
  8. 8.Write 9/30 in its simplest form. =
  9. 9.What is the HCF of 6 and 24?
  10. 10.Is 3/10 in its simplest form? (a) No (b) Yes
  11. 11.Write 6/16 in its simplest form. =
  12. 12.What is the HCF of 40 and 45?
  13. 13.What is the HCF of 15 and 21?
  14. 14.What is the HCF of 12 and 15?
  15. 15.Write 3/24 in its simplest form. =
  16. 16.Is 5/10 in its simplest form? (a) Yes (b) No
  17. 17.What is the HCF of 30 and 36?
  18. 18.What is the HCF of 12 and 20?
  19. 19.Is 15/18 in its simplest form? (a) Yes (b) No
  20. 20.Write 9/36 in its simplest form. =
  21. 21.Write 8/36 in its simplest form. =
  22. 22.Write 25/30 in its simplest form. =
  23. 23.Write 16/20 in its simplest form. =
  24. 24.Write 16/40 in its simplest form. =
  25. 25.Is 1/5 in its simplest form? (a) Yes (b) No
  26. 26.Is 7/10 in its simplest form? (a) No (b) Yes
  27. 27.What is the HCF of 10 and 45?
  28. 28.What is the HCF of 15 and 40?
  29. 29.Is 1/6 in its simplest form? (a) Yes (b) No
  30. 30.What is the HCF of 81 and 90?
  31. 31.What is the HCF of 49 and 70?
  32. 32.Is 35/40 in its simplest form? (a) No (b) Yes
  33. 33.What is the HCF of 6 and 8?
  34. 34.What is the HCF of 14 and 20?
  35. 35.What is the HCF of 25 and 30?
  36. 36.Write 12/28 in its simplest form. =
  37. 37.What is the HCF of 32 and 40?
  38. 38.Write 15/50 in its simplest form. =
  39. 39.Write 18/45 in its simplest form. =
  40. 40.What is the HCF of 12 and 40?

Answer key

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

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