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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 353 · 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 8/64 in its simplest form. =
  2. 2.What is the HCF of 32 and 40?
  3. 3.What is the HCF of 9 and 36?
  4. 4.Is 5/9 in its simplest form? (a) No (b) Yes
  5. 5.Is 3/9 in its simplest form? (a) No (b) Yes
  6. 6.Write 15/40 in its simplest form. =
  7. 7.Is 3/5 in its simplest form? (a) No (b) Yes
  8. 8.Write 28/32 in its simplest form. =
  9. 9.What is the HCF of 6 and 14?
  10. 10.Is 3/4 in its simplest form? (a) No (b) Yes
  11. 11.Write 12/15 in its simplest form. =
  12. 12.What is the HCF of 45 and 63?
  13. 13.Write 3/12 in its simplest form. =
  14. 14.What is the HCF of 25 and 35?
  15. 15.Write 5/10 in its simplest form. =
  16. 16.What is the HCF of 40 and 45?
  17. 17.Write 8/20 in its simplest form. =
  18. 18.Is 15/50 in its simplest form? (a) No (b) Yes
  19. 19.Write 2/10 in its simplest form. =
  20. 20.What is the HCF of 10 and 14?
  21. 21.Write 32/72 in its simplest form. =
  22. 22.Is 4/10 in its simplest form? (a) Yes (b) No
  23. 23.Write 18/24 in its simplest form. =
  24. 24.Is 8/12 in its simplest form? (a) No (b) Yes
  25. 25.Is 42/60 in its simplest form? (a) Yes (b) No
  26. 26.Write 54/63 in its simplest form. =
  27. 27.Is 12/30 in its simplest form? (a) No (b) Yes
  28. 28.Write 20/36 in its simplest form. =
  29. 29.Write 7/21 in its simplest form. =
  30. 30.Write 25/40 in its simplest form. =
  31. 31.What is the HCF of 20 and 25?
  32. 32.Write 16/24 in its simplest form. =
  33. 33.Is 2/3 in its simplest form? (a) Yes (b) No
  34. 34.Is 1/4 in its simplest form? (a) Yes (b) No
  35. 35.Write 15/27 in its simplest form. =
  36. 36.Is 4/20 in its simplest form? (a) Yes (b) No
  37. 37.What is the HCF of 63 and 70?
  38. 38.Write 12/16 in its simplest form. =
  39. 39.Write 25/45 in its simplest form. =
  40. 40.Write 18/48 in its simplest form. =

Answer key

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

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