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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 815 · 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 14/35 in its simplest form. =
  2. 2.Is 4/7 in its simplest form? (a) No (b) Yes
  3. 3.What is the HCF of 6 and 8?
  4. 4.Write 7/70 in its simplest form. =
  5. 5.What is the HCF of 36 and 40?
  6. 6.Is 15/35 in its simplest form? (a) Yes (b) No
  7. 7.Write 7/28 in its simplest form. =
  8. 8.What is the HCF of 45 and 81?
  9. 9.What is the HCF of 30 and 35?
  10. 10.Write 45/50 in its simplest form. =
  11. 11.Write 6/30 in its simplest form. =
  12. 12.Is 7/10 in its simplest form? (a) No (b) Yes
  13. 13.Is 12/16 in its simplest form? (a) No (b) Yes
  14. 14.Is 12/14 in its simplest form? (a) Yes (b) No
  15. 15.Is 12/21 in its simplest form? (a) Yes (b) No
  16. 16.What is the HCF of 32 and 40?
  17. 17.Write 27/63 in its simplest form. =
  18. 18.Write 35/42 in its simplest form. =
  19. 19.What is the HCF of 45 and 54?
  20. 20.What is the HCF of 36 and 63?
  21. 21.What is the HCF of 14 and 35?
  22. 22.Write 9/54 in its simplest form. =
  23. 23.Write 6/24 in its simplest form. =
  24. 24.Is 12/28 in its simplest form? (a) Yes (b) No
  25. 25.What is the HCF of 18 and 42?
  26. 26.What is the HCF of 36 and 45?
  27. 27.What is the HCF of 42 and 49?
  28. 28.Is 9/10 in its simplest form? (a) Yes (b) No
  29. 29.Write 14/21 in its simplest form. =
  30. 30.What is the HCF of 40 and 72?
  31. 31.Write 9/72 in its simplest form. =
  32. 32.What is the HCF of 27 and 90?
  33. 33.Is 12/30 in its simplest form? (a) Yes (b) No
  34. 34.What is the HCF of 81 and 90?
  35. 35.Write 8/40 in its simplest form. =
  36. 36.Is 1/5 in its simplest form? (a) No (b) Yes
  37. 37.Is 4/8 in its simplest form? (a) Yes (b) No
  38. 38.Is 5/25 in its simplest form? (a) Yes (b) No
  39. 39.Write 24/54 in its simplest form. =
  40. 40.Write 21/56 in its simplest form. =

Answer key

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

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