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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 700 · 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 81/90 in its simplest form. =
  2. 2.Write 27/30 in its simplest form. =
  3. 3.Write 3/24 in its simplest form. =
  4. 4.What is the HCF of 4 and 14?
  5. 5.Write 4/6 in its simplest form. =
  6. 6.What is the HCF of 6 and 30?
  7. 7.Write 2/4 in its simplest form. =
  8. 8.Write 8/56 in its simplest form. =
  9. 9.Is 2/12 in its simplest form? (a) Yes (b) No
  10. 10.What is the HCF of 14 and 63?
  11. 11.Is 6/7 in its simplest form? (a) No (b) Yes
  12. 12.What is the HCF of 9 and 54?
  13. 13.What is the HCF of 8 and 20?
  14. 14.Write 9/54 in its simplest form. =
  15. 15.What is the HCF of 9 and 90?
  16. 16.Is 12/21 in its simplest form? (a) No (b) Yes
  17. 17.Is 18/48 in its simplest form? (a) Yes (b) No
  18. 18.Write 5/35 in its simplest form. =
  19. 19.Write 16/20 in its simplest form. =
  20. 20.What is the HCF of 6 and 18?
  21. 21.Is 5/8 in its simplest form? (a) No (b) Yes
  22. 22.Is 1/2 in its simplest form? (a) No (b) Yes
  23. 23.Is 2/14 in its simplest form? (a) Yes (b) No
  24. 24.Is 6/9 in its simplest form? (a) Yes (b) No
  25. 25.Is 5/9 in its simplest form? (a) No (b) Yes
  26. 26.What is the HCF of 18 and 48?
  27. 27.What is the HCF of 9 and 72?
  28. 28.Write 8/10 in its simplest form. =
  29. 29.What is the HCF of 15 and 50?
  30. 30.Is 10/45 in its simplest form? (a) Yes (b) No
  31. 31.Is 2/5 in its simplest form? (a) Yes (b) No
  32. 32.Is 4/9 in its simplest form? (a) No (b) Yes
  33. 33.Write 20/36 in its simplest form. =
  34. 34.Is 9/24 in its simplest form? (a) Yes (b) No
  35. 35.Write 12/21 in its simplest form. =
  36. 36.Is 6/16 in its simplest form? (a) No (b) Yes
  37. 37.Is 2/10 in its simplest form? (a) Yes (b) No
  38. 38.Write 20/28 in its simplest form. =
  39. 39.Write 7/42 in its simplest form. =
  40. 40.What is the HCF of 35 and 40?

Answer key

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

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