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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 424 · 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 12?
  2. 2.Is 5/15 in its simplest form? (a) Yes (b) No
  3. 3.Is 15/40 in its simplest form? (a) No (b) Yes
  4. 4.What is the HCF of 10 and 35?
  5. 5.What is the HCF of 42 and 60?
  6. 6.What is the HCF of 14 and 16?
  7. 7.Is 1/2 in its simplest form? (a) No (b) Yes
  8. 8.Write 14/63 in its simplest form. =
  9. 9.Write 4/10 in its simplest form. =
  10. 10.Is 3/21 in its simplest form? (a) No (b) Yes
  11. 11.What is the HCF of 6 and 54?
  12. 12.Is 5/9 in its simplest form? (a) No (b) Yes
  13. 13.What is the HCF of 12 and 54?
  14. 14.Write 24/54 in its simplest form. =
  15. 15.What is the HCF of 56 and 80?
  16. 16.What is the HCF of 36 and 45?
  17. 17.Is 12/30 in its simplest form? (a) Yes (b) No
  18. 18.Write 12/15 in its simplest form. =
  19. 19.Write 8/80 in its simplest form. =
  20. 20.What is the HCF of 16 and 24?
  21. 21.Is 3/7 in its simplest form? (a) Yes (b) No
  22. 22.Write 25/45 in its simplest form. =
  23. 23.Is 1/6 in its simplest form? (a) Yes (b) No
  24. 24.Is 1/9 in its simplest form? (a) No (b) Yes
  25. 25.Write 56/80 in its simplest form. =
  26. 26.Is 5/7 in its simplest form? (a) Yes (b) No
  27. 27.Write 8/72 in its simplest form. =
  28. 28.Is 6/8 in its simplest form? (a) No (b) Yes
  29. 29.What is the HCF of 28 and 63?
  30. 30.Write 8/14 in its simplest form. =
  31. 31.Write 12/54 in its simplest form. =
  32. 32.Write 14/16 in its simplest form. =
  33. 33.Is 1/5 in its simplest form? (a) Yes (b) No
  34. 34.Is 2/3 in its simplest form? (a) Yes (b) No
  35. 35.Write 4/8 in its simplest form. =
  36. 36.Is 1/3 in its simplest form? (a) No (b) Yes
  37. 37.Write 14/21 in its simplest form. =
  38. 38.What is the HCF of 14 and 35?
  39. 39.Write 3/12 in its simplest form. =
  40. 40.What is the HCF of 4 and 16?

Answer key

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

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