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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 93 · 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 42/48 in its simplest form. =
  2. 2.Write 24/54 in its simplest form. =
  3. 3.Write 16/28 in its simplest form. =
  4. 4.Write 49/70 in its simplest form. =
  5. 5.Is 20/36 in its simplest form? (a) Yes (b) No
  6. 6.Write 18/81 in its simplest form. =
  7. 7.Is 2/7 in its simplest form? (a) No (b) Yes
  8. 8.What is the HCF of 9 and 45?
  9. 9.What is the HCF of 56 and 80?
  10. 10.Is 5/6 in its simplest form? (a) No (b) Yes
  11. 11.What is the HCF of 3 and 24?
  12. 12.Is 5/8 in its simplest form? (a) No (b) Yes
  13. 13.Write 25/45 in its simplest form. =
  14. 14.What is the HCF of 7 and 28?
  15. 15.Is 27/30 in its simplest form? (a) Yes (b) No
  16. 16.Write 54/60 in its simplest form. =
  17. 17.Is 3/8 in its simplest form? (a) Yes (b) No
  18. 18.Write 6/9 in its simplest form. =
  19. 19.Write 8/36 in its simplest form. =
  20. 20.What is the HCF of 42 and 49?
  21. 21.What is the HCF of 3 and 6?
  22. 22.Is 10/35 in its simplest form? (a) No (b) Yes
  23. 23.What is the HCF of 35 and 56?
  24. 24.Is 1/6 in its simplest form? (a) Yes (b) No
  25. 25.What is the HCF of 6 and 8?
  26. 26.Is 1/9 in its simplest form? (a) No (b) Yes
  27. 27.Write 49/63 in its simplest form. =
  28. 28.What is the HCF of 18 and 30?
  29. 29.Is 3/7 in its simplest form? (a) No (b) Yes
  30. 30.What is the HCF of 4 and 12?
  31. 31.What is the HCF of 49 and 63?
  32. 32.What is the HCF of 6 and 18?
  33. 33.Write 20/28 in its simplest form. =
  34. 34.Is 25/35 in its simplest form? (a) Yes (b) No
  35. 35.Is 1/7 in its simplest form? (a) No (b) Yes
  36. 36.What is the HCF of 4 and 10?
  37. 37.What is the HCF of 21 and 30?
  38. 38.What is the HCF of 48 and 56?
  39. 39.What is the HCF of 2 and 20?
  40. 40.What is the HCF of 63 and 81?

Answer key

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

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