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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 343 · 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 15/18 in its simplest form. =
  2. 2.Write 8/24 in its simplest form. =
  3. 3.Write 4/18 in its simplest form. =
  4. 4.Write 9/81 in its simplest form. =
  5. 5.What is the HCF of 56 and 72?
  6. 6.Is 12/54 in its simplest form? (a) Yes (b) No
  7. 7.What is the HCF of 4 and 28?
  8. 8.What is the HCF of 18 and 24?
  9. 9.Write 48/54 in its simplest form. =
  10. 10.What is the HCF of 28 and 32?
  11. 11.What is the HCF of 32 and 40?
  12. 12.Write 49/70 in its simplest form. =
  13. 13.What is the HCF of 8 and 16?
  14. 14.Is 25/45 in its simplest form? (a) No (b) Yes
  15. 15.Write 4/36 in its simplest form. =
  16. 16.Is 3/8 in its simplest form? (a) Yes (b) No
  17. 17.Write 3/30 in its simplest form. =
  18. 18.Write 6/18 in its simplest form. =
  19. 19.Write 42/60 in its simplest form. =
  20. 20.What is the HCF of 27 and 36?
  21. 21.Is 6/16 in its simplest form? (a) No (b) Yes
  22. 22.Write 20/45 in its simplest form. =
  23. 23.Write 27/45 in its simplest form. =
  24. 24.Is 4/5 in its simplest form? (a) Yes (b) No
  25. 25.Write 8/56 in its simplest form. =
  26. 26.Is 5/6 in its simplest form? (a) Yes (b) No
  27. 27.What is the HCF of 5 and 50?
  28. 28.What is the HCF of 12 and 20?
  29. 29.What is the HCF of 24 and 27?
  30. 30.Is 3/4 in its simplest form? (a) No (b) Yes
  31. 31.Write 6/54 in its simplest form. =
  32. 32.Write 6/21 in its simplest form. =
  33. 33.Is 12/20 in its simplest form? (a) Yes (b) No
  34. 34.Is 25/40 in its simplest form? (a) Yes (b) No
  35. 35.Is 36/40 in its simplest form? (a) Yes (b) No
  36. 36.Is 25/35 in its simplest form? (a) Yes (b) No
  37. 37.What is the HCF of 21 and 27?
  38. 38.What is the HCF of 30 and 42?
  39. 39.What is the HCF of 3 and 21?
  40. 40.Write 4/12 in its simplest form. =

Answer key

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

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