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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 722 · 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 3/21 in its simplest form. =
  2. 2.What is the HCF of 9 and 45?
  3. 3.What is the HCF of 16 and 40?
  4. 4.Write 5/15 in its simplest form. =
  5. 5.What is the HCF of 32 and 40?
  6. 6.Is 7/10 in its simplest form? (a) No (b) Yes
  7. 7.Write 21/70 in its simplest form. =
  8. 8.Write 81/90 in its simplest form. =
  9. 9.What is the HCF of 14 and 20?
  10. 10.Is 1/4 in its simplest form? (a) No (b) Yes
  11. 11.Write 20/24 in its simplest form. =
  12. 12.Write 2/14 in its simplest form. =
  13. 13.What is the HCF of 9 and 90?
  14. 14.Is 8/9 in its simplest form? (a) No (b) Yes
  15. 15.Is 1/3 in its simplest form? (a) Yes (b) No
  16. 16.What is the HCF of 9 and 81?
  17. 17.What is the HCF of 4 and 18?
  18. 18.Is 3/15 in its simplest form? (a) Yes (b) No
  19. 19.Is 1/5 in its simplest form? (a) No (b) Yes
  20. 20.Write 8/18 in its simplest form. =
  21. 21.Write 16/24 in its simplest form. =
  22. 22.Is 3/8 in its simplest form? (a) Yes (b) No
  23. 23.Write 15/40 in its simplest form. =
  24. 24.Write 12/15 in its simplest form. =
  25. 25.What is the HCF of 8 and 18?
  26. 26.Write 5/35 in its simplest form. =
  27. 27.What is the HCF of 8 and 72?
  28. 28.Write 6/14 in its simplest form. =
  29. 29.What is the HCF of 3 and 12?
  30. 30.Is 7/9 in its simplest form? (a) Yes (b) No
  31. 31.Write 45/50 in its simplest form. =
  32. 32.Write 9/12 in its simplest form. =
  33. 33.What is the HCF of 8 and 80?
  34. 34.What is the HCF of 6 and 27?
  35. 35.Write 6/18 in its simplest form. =
  36. 36.Is 30/54 in its simplest form? (a) No (b) Yes
  37. 37.What is the HCF of 4 and 8?
  38. 38.What is the HCF of 3 and 21?
  39. 39.What is the HCF of 18 and 63?
  40. 40.Write 25/30 in its simplest form. =

Answer key

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

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