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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 732 · 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.Is 15/25 in its simplest form? (a) No (b) Yes
  2. 2.Is 12/14 in its simplest form? (a) Yes (b) No
  3. 3.Write 30/54 in its simplest form. =
  4. 4.Write 12/15 in its simplest form. =
  5. 5.Is 8/9 in its simplest form? (a) No (b) Yes
  6. 6.Is 5/10 in its simplest form? (a) No (b) Yes
  7. 7.Write 9/21 in its simplest form. =
  8. 8.Write 18/30 in its simplest form. =
  9. 9.Write 9/90 in its simplest form. =
  10. 10.What is the HCF of 6 and 27?
  11. 11.What is the HCF of 45 and 50?
  12. 12.Is 2/5 in its simplest form? (a) Yes (b) No
  13. 13.Is 2/3 in its simplest form? (a) No (b) Yes
  14. 14.What is the HCF of 4 and 16?
  15. 15.What is the HCF of 49 and 63?
  16. 16.Is 10/14 in its simplest form? (a) No (b) Yes
  17. 17.Write 18/81 in its simplest form. =
  18. 18.Write 9/15 in its simplest form. =
  19. 19.What is the HCF of 24 and 28?
  20. 20.Is 20/28 in its simplest form? (a) No (b) Yes
  21. 21.Write 2/16 in its simplest form. =
  22. 22.Write 6/9 in its simplest form. =
  23. 23.Is 5/6 in its simplest form? (a) No (b) Yes
  24. 24.Is 24/42 in its simplest form? (a) Yes (b) No
  25. 25.What is the HCF of 6 and 12?
  26. 26.What is the HCF of 3 and 6?
  27. 27.Write 35/63 in its simplest form. =
  28. 28.What is the HCF of 9 and 18?
  29. 29.Write 7/21 in its simplest form. =
  30. 30.Is 4/20 in its simplest form? (a) Yes (b) No
  31. 31.What is the HCF of 72 and 80?
  32. 32.Write 4/20 in its simplest form. =
  33. 33.Write 49/56 in its simplest form. =
  34. 34.Write 5/30 in its simplest form. =
  35. 35.What is the HCF of 21 and 30?
  36. 36.Write 16/40 in its simplest form. =
  37. 37.What is the HCF of 14 and 35?
  38. 38.Write 9/63 in its simplest form. =
  39. 39.Write 25/40 in its simplest form. =
  40. 40.Write 10/35 in its simplest form. =

Answer key

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

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