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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 499 · 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 12/14 in its simplest form. =
  2. 2.Write 12/30 in its simplest form. =
  3. 3.Is 2/20 in its simplest form? (a) No (b) Yes
  4. 4.Is 8/10 in its simplest form? (a) Yes (b) No
  5. 5.Is 6/14 in its simplest form? (a) No (b) Yes
  6. 6.Write 12/54 in its simplest form. =
  7. 7.What is the HCF of 8 and 80?
  8. 8.Write 18/30 in its simplest form. =
  9. 9.What is the HCF of 15 and 18?
  10. 10.Write 63/90 in its simplest form. =
  11. 11.Is 28/36 in its simplest form? (a) Yes (b) No
  12. 12.Is 1/7 in its simplest form? (a) No (b) Yes
  13. 13.Is 4/5 in its simplest form? (a) No (b) Yes
  14. 14.Write 32/40 in its simplest form. =
  15. 15.Is 24/30 in its simplest form? (a) Yes (b) No
  16. 16.Write 3/30 in its simplest form. =
  17. 17.What is the HCF of 30 and 48?
  18. 18.Is 1/5 in its simplest form? (a) Yes (b) No
  19. 19.Is 24/28 in its simplest form? (a) Yes (b) No
  20. 20.Write 21/30 in its simplest form. =
  21. 21.Is 2/3 in its simplest form? (a) No (b) Yes
  22. 22.What is the HCF of 32 and 40?
  23. 23.Write 9/15 in its simplest form. =
  24. 24.What is the HCF of 32 and 36?
  25. 25.What is the HCF of 45 and 63?
  26. 26.Is 5/7 in its simplest form? (a) Yes (b) No
  27. 27.Write 49/56 in its simplest form. =
  28. 28.Write 25/30 in its simplest form. =
  29. 29.Write 8/32 in its simplest form. =
  30. 30.Write 2/16 in its simplest form. =
  31. 31.Is 3/5 in its simplest form? (a) No (b) Yes
  32. 32.Write 12/28 in its simplest form. =
  33. 33.Write 48/56 in its simplest form. =
  34. 34.Write 6/48 in its simplest form. =
  35. 35.What is the HCF of 63 and 90?
  36. 36.Is 12/40 in its simplest form? (a) No (b) Yes
  37. 37.Write 15/21 in its simplest form. =
  38. 38.Write 36/40 in its simplest form. =
  39. 39.What is the HCF of 24 and 30?
  40. 40.Write 40/45 in its simplest form. =

Answer key

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

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