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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 531 · 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 25/45 in its simplest form. =
  2. 2.Write 4/18 in its simplest form. =
  3. 3.What is the HCF of 28 and 32?
  4. 4.What is the HCF of 18 and 63?
  5. 5.Is 8/9 in its simplest form? (a) Yes (b) No
  6. 6.What is the HCF of 40 and 64?
  7. 7.Write 45/72 in its simplest form. =
  8. 8.Write 10/12 in its simplest form. =
  9. 9.What is the HCF of 24 and 40?
  10. 10.Is 1/4 in its simplest form? (a) No (b) Yes
  11. 11.What is the HCF of 30 and 48?
  12. 12.Write 5/45 in its simplest form. =
  13. 13.Is 5/6 in its simplest form? (a) Yes (b) No
  14. 14.Is 1/2 in its simplest form? (a) Yes (b) No
  15. 15.What is the HCF of 45 and 63?
  16. 16.What is the HCF of 4 and 36?
  17. 17.What is the HCF of 4 and 14?
  18. 18.What is the HCF of 14 and 49?
  19. 19.Write 54/63 in its simplest form. =
  20. 20.Write 12/14 in its simplest form. =
  21. 21.Write 24/80 in its simplest form. =
  22. 22.Is 20/35 in its simplest form? (a) Yes (b) No
  23. 23.Write 48/54 in its simplest form. =
  24. 24.What is the HCF of 15 and 21?
  25. 25.Is 10/45 in its simplest form? (a) Yes (b) No
  26. 26.Is 3/8 in its simplest form? (a) No (b) Yes
  27. 27.What is the HCF of 7 and 21?
  28. 28.Write 15/25 in its simplest form. =
  29. 29.Write 6/12 in its simplest form. =
  30. 30.What is the HCF of 7 and 42?
  31. 31.Is 4/9 in its simplest form? (a) Yes (b) No
  32. 32.Is 1/5 in its simplest form? (a) No (b) Yes
  33. 33.Is 8/28 in its simplest form? (a) Yes (b) No
  34. 34.What is the HCF of 12 and 30?
  35. 35.What is the HCF of 5 and 15?
  36. 36.Write 3/18 in its simplest form. =
  37. 37.Write 4/36 in its simplest form. =
  38. 38.Is 4/16 in its simplest form? (a) No (b) Yes
  39. 39.Write 32/56 in its simplest form. =
  40. 40.Write 35/42 in its simplest form. =

Answer key

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

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