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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 381 · 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 5/45 in its simplest form. =
  2. 2.What is the HCF of 28 and 49?
  3. 3.What is the HCF of 18 and 45?
  4. 4.Write 18/60 in its simplest form. =
  5. 5.Is 4/10 in its simplest form? (a) No (b) Yes
  6. 6.Write 10/12 in its simplest form. =
  7. 7.Write 15/35 in its simplest form. =
  8. 8.What is the HCF of 49 and 63?
  9. 9.What is the HCF of 27 and 90?
  10. 10.What is the HCF of 6 and 18?
  11. 11.Is 10/16 in its simplest form? (a) Yes (b) No
  12. 12.What is the HCF of 14 and 35?
  13. 13.Write 63/81 in its simplest form. =
  14. 14.What is the HCF of 48 and 56?
  15. 15.Is 12/42 in its simplest form? (a) No (b) Yes
  16. 16.Write 25/40 in its simplest form. =
  17. 17.Write 10/14 in its simplest form. =
  18. 18.Is 12/40 in its simplest form? (a) Yes (b) No
  19. 19.Is 1/10 in its simplest form? (a) No (b) Yes
  20. 20.What is the HCF of 21 and 27?
  21. 21.Write 16/28 in its simplest form. =
  22. 22.Is 2/12 in its simplest form? (a) No (b) Yes
  23. 23.Write 3/6 in its simplest form. =
  24. 24.Is 5/30 in its simplest form? (a) No (b) Yes
  25. 25.What is the HCF of 28 and 63?
  26. 26.Write 21/35 in its simplest form. =
  27. 27.Is 6/16 in its simplest form? (a) Yes (b) No
  28. 28.What is the HCF of 10 and 12?
  29. 29.What is the HCF of 45 and 72?
  30. 30.Write 21/56 in its simplest form. =
  31. 31.What is the HCF of 12 and 18?
  32. 32.What is the HCF of 20 and 35?
  33. 33.Is 5/8 in its simplest form? (a) No (b) Yes
  34. 34.Write 9/45 in its simplest form. =
  35. 35.Write 27/36 in its simplest form. =
  36. 36.Is 10/14 in its simplest form? (a) No (b) Yes
  37. 37.What is the HCF of 5 and 40?
  38. 38.Is 1/5 in its simplest form? (a) No (b) Yes
  39. 39.Is 3/5 in its simplest form? (a) No (b) Yes
  40. 40.Write 18/20 in its simplest form. =

Answer key

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

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