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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 976 · 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 49/70 in its simplest form. =
  2. 2.Write 5/40 in its simplest form. =
  3. 3.Is 3/15 in its simplest form? (a) No (b) Yes
  4. 4.Is 12/32 in its simplest form? (a) No (b) Yes
  5. 5.Write 20/25 in its simplest form. =
  6. 6.What is the HCF of 18 and 42?
  7. 7.Is 25/40 in its simplest form? (a) No (b) Yes
  8. 8.Is 10/15 in its simplest form? (a) Yes (b) No
  9. 9.Write 45/54 in its simplest form. =
  10. 10.Is 3/5 in its simplest form? (a) Yes (b) No
  11. 11.Write 15/24 in its simplest form. =
  12. 12.What is the HCF of 21 and 28?
  13. 13.What is the HCF of 36 and 42?
  14. 14.What is the HCF of 6 and 20?
  15. 15.What is the HCF of 12 and 28?
  16. 16.Write 3/27 in its simplest form. =
  17. 17.Is 20/24 in its simplest form? (a) No (b) Yes
  18. 18.What is the HCF of 27 and 45?
  19. 19.Write 12/21 in its simplest form. =
  20. 20.Is 2/16 in its simplest form? (a) No (b) Yes
  21. 21.Write 3/12 in its simplest form. =
  22. 22.Write 20/35 in its simplest form. =
  23. 23.Write 6/10 in its simplest form. =
  24. 24.What is the HCF of 5 and 50?
  25. 25.Write 40/56 in its simplest form. =
  26. 26.What is the HCF of 28 and 32?
  27. 27.What is the HCF of 8 and 64?
  28. 28.Is 8/28 in its simplest form? (a) No (b) Yes
  29. 29.Write 20/45 in its simplest form. =
  30. 30.What is the HCF of 27 and 63?
  31. 31.Is 5/6 in its simplest form? (a) No (b) Yes
  32. 32.Write 30/42 in its simplest form. =
  33. 33.Is 5/8 in its simplest form? (a) No (b) Yes
  34. 34.What is the HCF of 24 and 42?
  35. 35.Is 1/2 in its simplest form? (a) No (b) Yes
  36. 36.Is 6/27 in its simplest form? (a) Yes (b) No
  37. 37.Write 12/32 in its simplest form. =
  38. 38.Write 14/35 in its simplest form. =
  39. 39.Is 3/24 in its simplest form? (a) Yes (b) No
  40. 40.Write 20/36 in its simplest form. =

Answer key

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

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