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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 44 · 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 3/21 in its simplest form. =
  2. 2.What is the HCF of 4 and 14?
  3. 3.Write 14/21 in its simplest form. =
  4. 4.What is the HCF of 54 and 60?
  5. 5.Write 3/15 in its simplest form. =
  6. 6.What is the HCF of 18 and 21?
  7. 7.Is 1/6 in its simplest form? (a) No (b) Yes
  8. 8.Is 4/9 in its simplest form? (a) No (b) Yes
  9. 9.Write 20/28 in its simplest form. =
  10. 10.Is 3/10 in its simplest form? (a) No (b) Yes
  11. 11.Is 2/3 in its simplest form? (a) Yes (b) No
  12. 12.Is 4/10 in its simplest form? (a) No (b) Yes
  13. 13.Write 6/20 in its simplest form. =
  14. 14.What is the HCF of 12 and 15?
  15. 15.What is the HCF of 49 and 56?
  16. 16.What is the HCF of 4 and 24?
  17. 17.What is the HCF of 27 and 36?
  18. 18.What is the HCF of 24 and 30?
  19. 19.Is 1/4 in its simplest form? (a) Yes (b) No
  20. 20.Is 4/20 in its simplest form? (a) Yes (b) No
  21. 21.Is 6/7 in its simplest form? (a) No (b) Yes
  22. 22.What is the HCF of 21 and 35?
  23. 23.Is 3/5 in its simplest form? (a) Yes (b) No
  24. 24.Is 1/2 in its simplest form? (a) Yes (b) No
  25. 25.Write 10/12 in its simplest form. =
  26. 26.Write 9/12 in its simplest form. =
  27. 27.Is 1/3 in its simplest form? (a) No (b) Yes
  28. 28.Write 2/6 in its simplest form. =
  29. 29.Write 36/81 in its simplest form. =
  30. 30.What is the HCF of 20 and 45?
  31. 31.Is 4/6 in its simplest form? (a) No (b) Yes
  32. 32.Write 30/42 in its simplest form. =
  33. 33.Write 32/40 in its simplest form. =
  34. 34.Write 3/6 in its simplest form. =
  35. 35.Write 72/81 in its simplest form. =
  36. 36.Write 24/54 in its simplest form. =
  37. 37.Write 35/63 in its simplest form. =
  38. 38.Is 12/27 in its simplest form? (a) No (b) Yes
  39. 39.What is the HCF of 20 and 24?
  40. 40.What is the HCF of 28 and 36?

Answer key

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

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