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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 418 · 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.What is the HCF of 3 and 6?
  2. 2.What is the HCF of 45 and 81?
  3. 3.Write 12/20 in its simplest form. =
  4. 4.Write 6/42 in its simplest form. =
  5. 5.Write 5/15 in its simplest form. =
  6. 6.Write 18/48 in its simplest form. =
  7. 7.Write 24/40 in its simplest form. =
  8. 8.Is 2/14 in its simplest form? (a) No (b) Yes
  9. 9.Write 63/70 in its simplest form. =
  10. 10.Write 21/28 in its simplest form. =
  11. 11.Write 8/40 in its simplest form. =
  12. 12.Is 30/36 in its simplest form? (a) Yes (b) No
  13. 13.Write 6/16 in its simplest form. =
  14. 14.What is the HCF of 42 and 48?
  15. 15.Write 8/16 in its simplest form. =
  16. 16.Is 7/10 in its simplest form? (a) Yes (b) No
  17. 17.What is the HCF of 2 and 4?
  18. 18.What is the HCF of 30 and 42?
  19. 19.Write 2/6 in its simplest form. =
  20. 20.What is the HCF of 7 and 49?
  21. 21.Is 18/60 in its simplest form? (a) Yes (b) No
  22. 22.What is the HCF of 49 and 63?
  23. 23.Write 9/90 in its simplest form. =
  24. 24.What is the HCF of 18 and 63?
  25. 25.What is the HCF of 2 and 10?
  26. 26.Write 42/48 in its simplest form. =
  27. 27.Write 7/14 in its simplest form. =
  28. 28.What is the HCF of 72 and 80?
  29. 29.Is 2/12 in its simplest form? (a) Yes (b) No
  30. 30.Is 5/6 in its simplest form? (a) Yes (b) No
  31. 31.Is 6/9 in its simplest form? (a) Yes (b) No
  32. 32.Is 5/8 in its simplest form? (a) No (b) Yes
  33. 33.What is the HCF of 16 and 28?
  34. 34.Is 2/7 in its simplest form? (a) Yes (b) No
  35. 35.Is 2/9 in its simplest form? (a) No (b) Yes
  36. 36.Is 1/4 in its simplest form? (a) Yes (b) No
  37. 37.Write 4/40 in its simplest form. =
  38. 38.What is the HCF of 28 and 32?
  39. 39.Is 20/36 in its simplest form? (a) No (b) Yes
  40. 40.Write 6/36 in its simplest form. =

Answer key

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

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