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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 771 · 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 28 and 32?
  2. 2.Is 14/18 in its simplest form? (a) No (b) Yes
  3. 3.What is the HCF of 8 and 72?
  4. 4.Write 40/45 in its simplest form. =
  5. 5.What is the HCF of 72 and 80?
  6. 6.What is the HCF of 28 and 36?
  7. 7.Is 4/10 in its simplest form? (a) No (b) Yes
  8. 8.Write 4/18 in its simplest form. =
  9. 9.Is 12/42 in its simplest form? (a) Yes (b) No
  10. 10.Is 6/8 in its simplest form? (a) Yes (b) No
  11. 11.Write 27/45 in its simplest form. =
  12. 12.Is 12/30 in its simplest form? (a) Yes (b) No
  13. 13.Write 28/35 in its simplest form. =
  14. 14.Write 54/63 in its simplest form. =
  15. 15.Write 6/48 in its simplest form. =
  16. 16.Write 40/56 in its simplest form. =
  17. 17.What is the HCF of 8 and 28?
  18. 18.Write 12/20 in its simplest form. =
  19. 19.What is the HCF of 15 and 27?
  20. 20.What is the HCF of 14 and 49?
  21. 21.Write 32/40 in its simplest form. =
  22. 22.Is 35/50 in its simplest form? (a) Yes (b) No
  23. 23.What is the HCF of 9 and 24?
  24. 24.What is the HCF of 15 and 21?
  25. 25.What is the HCF of 24 and 56?
  26. 26.What is the HCF of 45 and 72?
  27. 27.Write 45/50 in its simplest form. =
  28. 28.Is 18/48 in its simplest form? (a) Yes (b) No
  29. 29.Is 5/20 in its simplest form? (a) No (b) Yes
  30. 30.What is the HCF of 8 and 16?
  31. 31.Is 54/60 in its simplest form? (a) No (b) Yes
  32. 32.Is 16/18 in its simplest form? (a) No (b) Yes
  33. 33.Write 18/42 in its simplest form. =
  34. 34.Is 4/36 in its simplest form? (a) No (b) Yes
  35. 35.Write 6/21 in its simplest form. =
  36. 36.Write 27/90 in its simplest form. =
  37. 37.Is 5/45 in its simplest form? (a) No (b) Yes
  38. 38.Is 1/5 in its simplest form? (a) No (b) Yes
  39. 39.What is the HCF of 12 and 15?
  40. 40.Write 24/64 in its simplest form. =

Answer key

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

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