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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 896 · 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 18 and 27?
  2. 2.Is 12/18 in its simplest form? (a) No (b) Yes
  3. 3.Write 18/24 in its simplest form. =
  4. 4.What is the HCF of 63 and 81?
  5. 5.Is 15/18 in its simplest form? (a) No (b) Yes
  6. 6.Is 1/10 in its simplest form? (a) Yes (b) No
  7. 7.Write 5/15 in its simplest form. =
  8. 8.Is 5/9 in its simplest form? (a) Yes (b) No
  9. 9.Write 18/60 in its simplest form. =
  10. 10.Is 2/3 in its simplest form? (a) No (b) Yes
  11. 11.Is 2/9 in its simplest form? (a) No (b) Yes
  12. 12.Write 42/48 in its simplest form. =
  13. 13.Is 15/20 in its simplest form? (a) No (b) Yes
  14. 14.What is the HCF of 12 and 54?
  15. 15.What is the HCF of 25 and 30?
  16. 16.What is the HCF of 3 and 9?
  17. 17.What is the HCF of 2 and 8?
  18. 18.Is 28/36 in its simplest form? (a) No (b) Yes
  19. 19.Is 4/5 in its simplest form? (a) No (b) Yes
  20. 20.Write 54/60 in its simplest form. =
  21. 21.What is the HCF of 3 and 15?
  22. 22.What is the HCF of 9 and 45?
  23. 23.Is 6/18 in its simplest form? (a) No (b) Yes
  24. 24.What is the HCF of 32 and 72?
  25. 25.Is 3/7 in its simplest form? (a) No (b) Yes
  26. 26.Write 15/40 in its simplest form. =
  27. 27.Write 36/81 in its simplest form. =
  28. 28.Is 9/21 in its simplest form? (a) Yes (b) No
  29. 29.Write 3/27 in its simplest form. =
  30. 30.Write 16/36 in its simplest form. =
  31. 31.What is the HCF of 6 and 18?
  32. 32.Write 6/15 in its simplest form. =
  33. 33.Write 15/24 in its simplest form. =
  34. 34.What is the HCF of 10 and 14?
  35. 35.Write 9/27 in its simplest form. =
  36. 36.Write 7/42 in its simplest form. =
  37. 37.What is the HCF of 9 and 18?
  38. 38.Is 16/28 in its simplest form? (a) Yes (b) No
  39. 39.What is the HCF of 4 and 8?
  40. 40.What is the HCF of 21 and 56?

Answer key

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

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