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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 78 · 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 15?
  2. 2.What is the HCF of 14 and 63?
  3. 3.What is the HCF of 49 and 70?
  4. 4.What is the HCF of 24 and 56?
  5. 5.Is 4/7 in its simplest form? (a) No (b) Yes
  6. 6.Write 54/63 in its simplest form. =
  7. 7.Write 8/18 in its simplest form. =
  8. 8.Is 5/20 in its simplest form? (a) Yes (b) No
  9. 9.Is 15/50 in its simplest form? (a) No (b) Yes
  10. 10.Is 30/54 in its simplest form? (a) Yes (b) No
  11. 11.What is the HCF of 6 and 20?
  12. 12.Is 4/5 in its simplest form? (a) No (b) Yes
  13. 13.Is 4/12 in its simplest form? (a) Yes (b) No
  14. 14.Is 7/9 in its simplest form? (a) No (b) Yes
  15. 15.What is the HCF of 63 and 90?
  16. 16.Write 27/45 in its simplest form. =
  17. 17.Write 40/48 in its simplest form. =
  18. 18.Write 15/50 in its simplest form. =
  19. 19.What is the HCF of 14 and 18?
  20. 20.Write 4/20 in its simplest form. =
  21. 21.Write 9/12 in its simplest form. =
  22. 22.Is 9/10 in its simplest form? (a) No (b) Yes
  23. 23.Write 2/14 in its simplest form. =
  24. 24.Write 10/18 in its simplest form. =
  25. 25.What is the HCF of 15 and 21?
  26. 26.What is the HCF of 3 and 21?
  27. 27.What is the HCF of 2 and 12?
  28. 28.What is the HCF of 21 and 70?
  29. 29.What is the HCF of 6 and 36?
  30. 30.What is the HCF of 4 and 18?
  31. 31.What is the HCF of 42 and 48?
  32. 32.Write 30/42 in its simplest form. =
  33. 33.Write 6/10 in its simplest form. =
  34. 34.Is 1/8 in its simplest form? (a) Yes (b) No
  35. 35.What is the HCF of 7 and 49?
  36. 36.What is the HCF of 25 and 40?
  37. 37.Is 8/10 in its simplest form? (a) No (b) Yes
  38. 38.Write 24/28 in its simplest form. =
  39. 39.Write 32/72 in its simplest form. =
  40. 40.Write 7/70 in its simplest form. =

Answer key

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

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