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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 549 · 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 10/15 in its simplest form. =
  2. 2.Is 1/3 in its simplest form? (a) Yes (b) No
  3. 3.What is the HCF of 8 and 16?
  4. 4.Is 3/18 in its simplest form? (a) No (b) Yes
  5. 5.Write 21/24 in its simplest form. =
  6. 6.Is 8/18 in its simplest form? (a) Yes (b) No
  7. 7.What is the HCF of 12 and 30?
  8. 8.Write 24/54 in its simplest form. =
  9. 9.Write 14/21 in its simplest form. =
  10. 10.What is the HCF of 36 and 81?
  11. 11.Write 9/63 in its simplest form. =
  12. 12.Is 4/9 in its simplest form? (a) Yes (b) No
  13. 13.Write 6/12 in its simplest form. =
  14. 14.Write 7/70 in its simplest form. =
  15. 15.Is 2/8 in its simplest form? (a) No (b) Yes
  16. 16.What is the HCF of 56 and 63?
  17. 17.Write 12/20 in its simplest form. =
  18. 18.Write 63/90 in its simplest form. =
  19. 19.Is 1/8 in its simplest form? (a) No (b) Yes
  20. 20.Write 42/60 in its simplest form. =
  21. 21.Is 4/24 in its simplest form? (a) Yes (b) No
  22. 22.What is the HCF of 25 and 30?
  23. 23.Write 9/36 in its simplest form. =
  24. 24.What is the HCF of 35 and 56?
  25. 25.Is 6/21 in its simplest form? (a) Yes (b) No
  26. 26.What is the HCF of 10 and 15?
  27. 27.Is 21/30 in its simplest form? (a) No (b) Yes
  28. 28.Is 2/12 in its simplest form? (a) Yes (b) No
  29. 29.What is the HCF of 6 and 42?
  30. 30.Is 5/40 in its simplest form? (a) Yes (b) No
  31. 31.Is 2/5 in its simplest form? (a) Yes (b) No
  32. 32.What is the HCF of 24 and 27?
  33. 33.Is 6/60 in its simplest form? (a) Yes (b) No
  34. 34.Is 5/8 in its simplest form? (a) Yes (b) No
  35. 35.Write 2/14 in its simplest form. =
  36. 36.Write 4/10 in its simplest form. =
  37. 37.Write 20/35 in its simplest form. =
  38. 38.Write 21/27 in its simplest form. =
  39. 39.What is the HCF of 14 and 21?
  40. 40.Write 45/72 in its simplest form. =

Answer key

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

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