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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 228 · 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 63/72 in its simplest form. =
  2. 2.Is 2/9 in its simplest form? (a) No (b) Yes
  3. 3.Is 42/60 in its simplest form? (a) No (b) Yes
  4. 4.Write 35/56 in its simplest form. =
  5. 5.Write 25/35 in its simplest form. =
  6. 6.Is 12/28 in its simplest form? (a) Yes (b) No
  7. 7.Is 28/36 in its simplest form? (a) Yes (b) No
  8. 8.Is 4/20 in its simplest form? (a) Yes (b) No
  9. 9.What is the HCF of 3 and 18?
  10. 10.What is the HCF of 8 and 16?
  11. 11.Is 4/12 in its simplest form? (a) No (b) Yes
  12. 12.What is the HCF of 36 and 81?
  13. 13.Write 10/15 in its simplest form. =
  14. 14.Is 24/42 in its simplest form? (a) Yes (b) No
  15. 15.Is 1/5 in its simplest form? (a) No (b) Yes
  16. 16.Is 30/54 in its simplest form? (a) Yes (b) No
  17. 17.Write 25/30 in its simplest form. =
  18. 18.What is the HCF of 4 and 40?
  19. 19.Is 1/9 in its simplest form? (a) No (b) Yes
  20. 20.Write 32/72 in its simplest form. =
  21. 21.Is 15/24 in its simplest form? (a) Yes (b) No
  22. 22.Write 36/45 in its simplest form. =
  23. 23.What is the HCF of 3 and 30?
  24. 24.What is the HCF of 7 and 49?
  25. 25.Write 5/25 in its simplest form. =
  26. 26.Write 8/20 in its simplest form. =
  27. 27.Is 18/42 in its simplest form? (a) No (b) Yes
  28. 28.Is 1/6 in its simplest form? (a) Yes (b) No
  29. 29.Write 12/54 in its simplest form. =
  30. 30.Is 42/48 in its simplest form? (a) No (b) Yes
  31. 31.What is the HCF of 21 and 24?
  32. 32.Write 6/14 in its simplest form. =
  33. 33.Write 35/42 in its simplest form. =
  34. 34.Write 16/24 in its simplest form. =
  35. 35.What is the HCF of 64 and 72?
  36. 36.What is the HCF of 6 and 16?
  37. 37.Write 9/45 in its simplest form. =
  38. 38.Write 5/45 in its simplest form. =
  39. 39.Write 6/16 in its simplest form. =
  40. 40.Write 12/28 in its simplest form. =

Answer key

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

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