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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 76 · 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 6 and 10?
  2. 2.Is 2/3 in its simplest form? (a) No (b) Yes
  3. 3.Write 63/72 in its simplest form. =
  4. 4.Is 5/6 in its simplest form? (a) Yes (b) No
  5. 5.Write 45/81 in its simplest form. =
  6. 6.Write 24/27 in its simplest form. =
  7. 7.What is the HCF of 24 and 54?
  8. 8.Write 18/81 in its simplest form. =
  9. 9.Write 10/12 in its simplest form. =
  10. 10.What is the HCF of 45 and 54?
  11. 11.Write 6/10 in its simplest form. =
  12. 12.Is 12/54 in its simplest form? (a) Yes (b) No
  13. 13.What is the HCF of 20 and 25?
  14. 14.Is 3/5 in its simplest form? (a) No (b) Yes
  15. 15.Write 4/10 in its simplest form. =
  16. 16.What is the HCF of 35 and 63?
  17. 17.What is the HCF of 9 and 72?
  18. 18.What is the HCF of 27 and 30?
  19. 19.What is the HCF of 14 and 49?
  20. 20.What is the HCF of 9 and 90?
  21. 21.Is 2/7 in its simplest form? (a) Yes (b) No
  22. 22.Write 10/15 in its simplest form. =
  23. 23.What is the HCF of 42 and 54?
  24. 24.Is 25/30 in its simplest form? (a) No (b) Yes
  25. 25.Is 3/15 in its simplest form? (a) No (b) Yes
  26. 26.Is 24/42 in its simplest form? (a) Yes (b) No
  27. 27.Write 15/25 in its simplest form. =
  28. 28.Is 5/25 in its simplest form? (a) Yes (b) No
  29. 29.What is the HCF of 24 and 40?
  30. 30.What is the HCF of 28 and 32?
  31. 31.Is 7/10 in its simplest form? (a) Yes (b) No
  32. 32.Is 3/6 in its simplest form? (a) No (b) Yes
  33. 33.What is the HCF of 8 and 28?
  34. 34.Write 12/30 in its simplest form. =
  35. 35.What is the HCF of 16 and 40?
  36. 36.Write 16/28 in its simplest form. =
  37. 37.Is 8/18 in its simplest form? (a) Yes (b) No
  38. 38.What is the HCF of 5 and 25?
  39. 39.Is 7/8 in its simplest form? (a) No (b) Yes
  40. 40.Write 28/63 in its simplest form. =

Answer key

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

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