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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 110 · 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 21 and 27?
  2. 2.Is 15/35 in its simplest form? (a) Yes (b) No
  3. 3.Is 1/10 in its simplest form? (a) No (b) Yes
  4. 4.Is 6/21 in its simplest form? (a) No (b) Yes
  5. 5.Is 4/5 in its simplest form? (a) No (b) Yes
  6. 6.Write 8/12 in its simplest form. =
  7. 7.Is 3/12 in its simplest form? (a) No (b) Yes
  8. 8.Write 12/18 in its simplest form. =
  9. 9.What is the HCF of 6 and 24?
  10. 10.Is 2/4 in its simplest form? (a) No (b) Yes
  11. 11.Is 3/4 in its simplest form? (a) No (b) Yes
  12. 12.Write 40/45 in its simplest form. =
  13. 13.Is 42/60 in its simplest form? (a) No (b) Yes
  14. 14.Is 2/3 in its simplest form? (a) No (b) Yes
  15. 15.What is the HCF of 27 and 63?
  16. 16.Write 3/30 in its simplest form. =
  17. 17.Write 7/35 in its simplest form. =
  18. 18.Write 20/25 in its simplest form. =
  19. 19.Is 48/54 in its simplest form? (a) Yes (b) No
  20. 20.What is the HCF of 15 and 40?
  21. 21.What is the HCF of 27 and 36?
  22. 22.Is 20/35 in its simplest form? (a) No (b) Yes
  23. 23.What is the HCF of 12 and 21?
  24. 24.What is the HCF of 3 and 6?
  25. 25.Write 2/6 in its simplest form. =
  26. 26.Write 9/81 in its simplest form. =
  27. 27.Is 4/14 in its simplest form? (a) Yes (b) No
  28. 28.Is 1/5 in its simplest form? (a) No (b) Yes
  29. 29.Write 45/72 in its simplest form. =
  30. 30.Is 6/48 in its simplest form? (a) Yes (b) No
  31. 31.What is the HCF of 16 and 24?
  32. 32.Write 8/28 in its simplest form. =
  33. 33.Is 18/60 in its simplest form? (a) No (b) Yes
  34. 34.Is 8/9 in its simplest form? (a) No (b) Yes
  35. 35.Is 10/25 in its simplest form? (a) Yes (b) No
  36. 36.Write 30/54 in its simplest form. =
  37. 37.Write 6/20 in its simplest form. =
  38. 38.What is the HCF of 15 and 35?
  39. 39.Write 9/18 in its simplest form. =
  40. 40.What is the HCF of 30 and 35?

Answer key

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

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