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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 580 · 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 10/12 in its simplest form. =
  2. 2.Write 72/80 in its simplest form. =
  3. 3.Write 27/45 in its simplest form. =
  4. 4.Write 12/18 in its simplest form. =
  5. 5.Is 36/40 in its simplest form? (a) Yes (b) No
  6. 6.Write 9/72 in its simplest form. =
  7. 7.Is 15/50 in its simplest form? (a) No (b) Yes
  8. 8.Write 21/56 in its simplest form. =
  9. 9.Write 6/24 in its simplest form. =
  10. 10.What is the HCF of 35 and 63?
  11. 11.Is 10/25 in its simplest form? (a) No (b) Yes
  12. 12.What is the HCF of 20 and 28?
  13. 13.What is the HCF of 28 and 49?
  14. 14.Write 4/16 in its simplest form. =
  15. 15.Write 18/45 in its simplest form. =
  16. 16.Write 40/45 in its simplest form. =
  17. 17.Is 3/4 in its simplest form? (a) Yes (b) No
  18. 18.Is 3/8 in its simplest form? (a) No (b) Yes
  19. 19.What is the HCF of 49 and 56?
  20. 20.Write 7/14 in its simplest form. =
  21. 21.Is 3/5 in its simplest form? (a) No (b) Yes
  22. 22.Write 6/30 in its simplest form. =
  23. 23.Write 42/48 in its simplest form. =
  24. 24.What is the HCF of 9 and 27?
  25. 25.Write 3/24 in its simplest form. =
  26. 26.Write 16/18 in its simplest form. =
  27. 27.What is the HCF of 56 and 72?
  28. 28.Write 7/42 in its simplest form. =
  29. 29.Write 6/42 in its simplest form. =
  30. 30.Is 1/7 in its simplest form? (a) Yes (b) No
  31. 31.Is 10/15 in its simplest form? (a) No (b) Yes
  32. 32.Is 8/9 in its simplest form? (a) No (b) Yes
  33. 33.What is the HCF of 72 and 81?
  34. 34.What is the HCF of 54 and 63?
  35. 35.Is 5/7 in its simplest form? (a) No (b) Yes
  36. 36.Write 20/32 in its simplest form. =
  37. 37.Is 5/9 in its simplest form? (a) Yes (b) No
  38. 38.Write 32/36 in its simplest form. =
  39. 39.Write 25/30 in its simplest form. =
  40. 40.Write 16/36 in its simplest form. =

Answer key

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

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