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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 817 · 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.What is the HCF of 12 and 21?
  2. 2.Is 9/24 in its simplest form? (a) Yes (b) No
  3. 3.Write 12/15 in its simplest form. =
  4. 4.What is the HCF of 16 and 56?
  5. 5.Is 48/54 in its simplest form? (a) No (b) Yes
  6. 6.Write 9/63 in its simplest form. =
  7. 7.What is the HCF of 27 and 63?
  8. 8.Write 6/60 in its simplest form. =
  9. 9.Write 4/20 in its simplest form. =
  10. 10.Write 20/25 in its simplest form. =
  11. 11.Write 6/48 in its simplest form. =
  12. 12.Is 10/12 in its simplest form? (a) Yes (b) No
  13. 13.Write 20/35 in its simplest form. =
  14. 14.Write 14/63 in its simplest form. =
  15. 15.Write 6/8 in its simplest form. =
  16. 16.Is 16/20 in its simplest form? (a) Yes (b) No
  17. 17.What is the HCF of 24 and 27?
  18. 18.Is 9/10 in its simplest form? (a) Yes (b) No
  19. 19.Is 3/27 in its simplest form? (a) Yes (b) No
  20. 20.Is 5/8 in its simplest form? (a) Yes (b) No
  21. 21.Is 30/48 in its simplest form? (a) No (b) Yes
  22. 22.Write 16/20 in its simplest form. =
  23. 23.Is 1/8 in its simplest form? (a) No (b) Yes
  24. 24.What is the HCF of 5 and 45?
  25. 25.Write 25/35 in its simplest form. =
  26. 26.Write 5/30 in its simplest form. =
  27. 27.What is the HCF of 54 and 63?
  28. 28.What is the HCF of 9 and 90?
  29. 29.What is the HCF of 9 and 81?
  30. 30.Write 27/63 in its simplest form. =
  31. 31.What is the HCF of 4 and 20?
  32. 32.Write 8/18 in its simplest form. =
  33. 33.Is 3/7 in its simplest form? (a) Yes (b) No
  34. 34.Write 36/45 in its simplest form. =
  35. 35.What is the HCF of 3 and 24?
  36. 36.What is the HCF of 24 and 30?
  37. 37.What is the HCF of 4 and 10?
  38. 38.Write 36/81 in its simplest form. =
  39. 39.Is 8/9 in its simplest form? (a) No (b) Yes
  40. 40.What is the HCF of 35 and 50?

Answer key

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

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