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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 793 · 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 6/20 in its simplest form. =
  2. 2.What is the HCF of 27 and 36?
  3. 3.Write 20/45 in its simplest form. =
  4. 4.Write 9/18 in its simplest form. =
  5. 5.Is 2/5 in its simplest form? (a) Yes (b) No
  6. 6.What is the HCF of 45 and 72?
  7. 7.What is the HCF of 9 and 45?
  8. 8.Is 16/28 in its simplest form? (a) Yes (b) No
  9. 9.What is the HCF of 6 and 15?
  10. 10.What is the HCF of 25 and 40?
  11. 11.Is 5/45 in its simplest form? (a) Yes (b) No
  12. 12.What is the HCF of 3 and 24?
  13. 13.Write 6/54 in its simplest form. =
  14. 14.Write 5/25 in its simplest form. =
  15. 15.What is the HCF of 7 and 56?
  16. 16.What is the HCF of 21 and 24?
  17. 17.What is the HCF of 30 and 48?
  18. 18.Is 3/4 in its simplest form? (a) No (b) Yes
  19. 19.Is 3/5 in its simplest form? (a) No (b) Yes
  20. 20.What is the HCF of 6 and 36?
  21. 21.What is the HCF of 6 and 42?
  22. 22.Is 18/42 in its simplest form? (a) No (b) Yes
  23. 23.What is the HCF of 24 and 80?
  24. 24.Write 10/14 in its simplest form. =
  25. 25.What is the HCF of 28 and 63?
  26. 26.Write 9/15 in its simplest form. =
  27. 27.Write 9/27 in its simplest form. =
  28. 28.Is 8/28 in its simplest form? (a) Yes (b) No
  29. 29.Write 5/10 in its simplest form. =
  30. 30.Is 4/9 in its simplest form? (a) No (b) Yes
  31. 31.What is the HCF of 7 and 42?
  32. 32.Write 28/36 in its simplest form. =
  33. 33.Write 7/70 in its simplest form. =
  34. 34.Is 1/6 in its simplest form? (a) No (b) Yes
  35. 35.Write 15/25 in its simplest form. =
  36. 36.Is 12/42 in its simplest form? (a) Yes (b) No
  37. 37.Write 56/63 in its simplest form. =
  38. 38.What is the HCF of 7 and 49?
  39. 39.What is the HCF of 7 and 70?
  40. 40.What is the HCF of 6 and 18?

Answer key

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

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