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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 894 · 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 12/54 in its simplest form. =
  2. 2.Is 12/30 in its simplest form? (a) Yes (b) No
  3. 3.Is 1/5 in its simplest form? (a) Yes (b) No
  4. 4.What is the HCF of 81 and 90?
  5. 5.What is the HCF of 4 and 18?
  6. 6.Write 49/56 in its simplest form. =
  7. 7.What is the HCF of 12 and 15?
  8. 8.What is the HCF of 14 and 21?
  9. 9.Write 4/12 in its simplest form. =
  10. 10.Write 81/90 in its simplest form. =
  11. 11.Write 28/49 in its simplest form. =
  12. 12.Write 6/15 in its simplest form. =
  13. 13.What is the HCF of 72 and 81?
  14. 14.Write 2/18 in its simplest form. =
  15. 15.Is 1/2 in its simplest form? (a) Yes (b) No
  16. 16.Write 6/60 in its simplest form. =
  17. 17.Write 32/72 in its simplest form. =
  18. 18.Write 21/56 in its simplest form. =
  19. 19.Is 8/9 in its simplest form? (a) Yes (b) No
  20. 20.Write 9/63 in its simplest form. =
  21. 21.Is 24/54 in its simplest form? (a) Yes (b) No
  22. 22.What is the HCF of 12 and 18?
  23. 23.What is the HCF of 15 and 24?
  24. 24.What is the HCF of 18 and 60?
  25. 25.Write 5/40 in its simplest form. =
  26. 26.Write 16/24 in its simplest form. =
  27. 27.Is 10/12 in its simplest form? (a) No (b) Yes
  28. 28.Write 8/56 in its simplest form. =
  29. 29.What is the HCF of 7 and 35?
  30. 30.What is the HCF of 16 and 28?
  31. 31.What is the HCF of 12 and 40?
  32. 32.Is 2/4 in its simplest form? (a) No (b) Yes
  33. 33.Write 3/24 in its simplest form. =
  34. 34.What is the HCF of 9 and 81?
  35. 35.Write 15/25 in its simplest form. =
  36. 36.Write 10/16 in its simplest form. =
  37. 37.What is the HCF of 6 and 27?
  38. 38.What is the HCF of 6 and 54?
  39. 39.What is the HCF of 9 and 54?
  40. 40.Write 4/32 in its simplest form. =

Answer key

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

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