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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 480 · 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 18/21 in its simplest form. =
  2. 2.What is the HCF of 4 and 12?
  3. 3.What is the HCF of 18 and 20?
  4. 4.Write 6/60 in its simplest form. =
  5. 5.Is 14/18 in its simplest form? (a) Yes (b) No
  6. 6.Is 30/42 in its simplest form? (a) Yes (b) No
  7. 7.What is the HCF of 32 and 40?
  8. 8.What is the HCF of 40 and 64?
  9. 9.Is 2/3 in its simplest form? (a) Yes (b) No
  10. 10.What is the HCF of 16 and 18?
  11. 11.What is the HCF of 12 and 21?
  12. 12.Is 1/3 in its simplest form? (a) No (b) Yes
  13. 13.What is the HCF of 18 and 81?
  14. 14.Write 20/25 in its simplest form. =
  15. 15.Is 4/5 in its simplest form? (a) Yes (b) No
  16. 16.What is the HCF of 14 and 20?
  17. 17.Write 21/35 in its simplest form. =
  18. 18.Write 9/18 in its simplest form. =
  19. 19.Write 14/21 in its simplest form. =
  20. 20.Write 7/42 in its simplest form. =
  21. 21.What is the HCF of 14 and 49?
  22. 22.Is 5/8 in its simplest form? (a) No (b) Yes
  23. 23.Write 8/80 in its simplest form. =
  24. 24.Write 28/40 in its simplest form. =
  25. 25.Write 6/15 in its simplest form. =
  26. 26.Write 8/56 in its simplest form. =
  27. 27.What is the HCF of 12 and 15?
  28. 28.What is the HCF of 18 and 60?
  29. 29.Is 5/6 in its simplest form? (a) No (b) Yes
  30. 30.Is 3/10 in its simplest form? (a) No (b) Yes
  31. 31.What is the HCF of 9 and 72?
  32. 32.What is the HCF of 27 and 30?
  33. 33.Write 42/60 in its simplest form. =
  34. 34.What is the HCF of 12 and 20?
  35. 35.What is the HCF of 25 and 30?
  36. 36.Is 7/10 in its simplest form? (a) No (b) Yes
  37. 37.Is 9/10 in its simplest form? (a) Yes (b) No
  38. 38.Write 64/72 in its simplest form. =
  39. 39.What is the HCF of 4 and 10?
  40. 40.Write 6/12 in its simplest form. =

Answer key

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

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