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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 518 · 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 12/27 in its simplest form. =
  2. 2.What is the HCF of 3 and 21?
  3. 3.Write 36/81 in its simplest form. =
  4. 4.Is 1/5 in its simplest form? (a) Yes (b) No
  5. 5.Write 72/81 in its simplest form. =
  6. 6.What is the HCF of 6 and 24?
  7. 7.Is 2/7 in its simplest form? (a) Yes (b) No
  8. 8.What is the HCF of 4 and 12?
  9. 9.Write 6/9 in its simplest form. =
  10. 10.What is the HCF of 54 and 60?
  11. 11.Write 10/18 in its simplest form. =
  12. 12.Write 6/27 in its simplest form. =
  13. 13.Write 6/20 in its simplest form. =
  14. 14.What is the HCF of 10 and 45?
  15. 15.What is the HCF of 16 and 40?
  16. 16.Is 1/10 in its simplest form? (a) Yes (b) No
  17. 17.Is 20/35 in its simplest form? (a) No (b) Yes
  18. 18.Is 18/20 in its simplest form? (a) Yes (b) No
  19. 19.What is the HCF of 7 and 70?
  20. 20.Is 20/25 in its simplest form? (a) No (b) Yes
  21. 21.What is the HCF of 9 and 15?
  22. 22.Is 1/4 in its simplest form? (a) No (b) Yes
  23. 23.Is 30/54 in its simplest form? (a) No (b) Yes
  24. 24.Is 4/36 in its simplest form? (a) No (b) Yes
  25. 25.Write 16/24 in its simplest form. =
  26. 26.Write 9/15 in its simplest form. =
  27. 27.Write 49/56 in its simplest form. =
  28. 28.Is 36/42 in its simplest form? (a) No (b) Yes
  29. 29.Write 9/90 in its simplest form. =
  30. 30.Is 3/15 in its simplest form? (a) Yes (b) No
  31. 31.What is the HCF of 3 and 18?
  32. 32.Is 4/32 in its simplest form? (a) Yes (b) No
  33. 33.Write 56/63 in its simplest form. =
  34. 34.What is the HCF of 6 and 36?
  35. 35.What is the HCF of 20 and 28?
  36. 36.What is the HCF of 16 and 28?
  37. 37.Write 5/40 in its simplest form. =
  38. 38.Is 4/10 in its simplest form? (a) No (b) Yes
  39. 39.What is the HCF of 16 and 56?
  40. 40.Write 3/24 in its simplest form. =

Answer key

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

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