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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 24 · 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 2/8 in its simplest form. =
  2. 2.Is 12/20 in its simplest form? (a) No (b) Yes
  3. 3.What is the HCF of 9 and 30?
  4. 4.Write 6/60 in its simplest form. =
  5. 5.Write 7/49 in its simplest form. =
  6. 6.Write 9/30 in its simplest form. =
  7. 7.Is 2/3 in its simplest form? (a) No (b) Yes
  8. 8.What is the HCF of 14 and 49?
  9. 9.Write 18/45 in its simplest form. =
  10. 10.Is 10/45 in its simplest form? (a) No (b) Yes
  11. 11.Is 2/12 in its simplest form? (a) No (b) Yes
  12. 12.What is the HCF of 8 and 40?
  13. 13.What is the HCF of 4 and 14?
  14. 14.What is the HCF of 32 and 40?
  15. 15.Write 24/40 in its simplest form. =
  16. 16.Is 9/24 in its simplest form? (a) No (b) Yes
  17. 17.What is the HCF of 4 and 20?
  18. 18.Is 4/32 in its simplest form? (a) No (b) Yes
  19. 19.Write 24/54 in its simplest form. =
  20. 20.Is 25/40 in its simplest form? (a) Yes (b) No
  21. 21.What is the HCF of 3 and 9?
  22. 22.Is 42/48 in its simplest form? (a) No (b) Yes
  23. 23.Is 12/30 in its simplest form? (a) No (b) Yes
  24. 24.Is 5/7 in its simplest form? (a) Yes (b) No
  25. 25.Write 48/54 in its simplest form. =
  26. 26.Is 5/30 in its simplest form? (a) No (b) Yes
  27. 27.Is 36/40 in its simplest form? (a) Yes (b) No
  28. 28.Is 2/7 in its simplest form? (a) No (b) Yes
  29. 29.Is 9/21 in its simplest form? (a) Yes (b) No
  30. 30.What is the HCF of 7 and 42?
  31. 31.What is the HCF of 5 and 15?
  32. 32.What is the HCF of 81 and 90?
  33. 33.Write 49/70 in its simplest form. =
  34. 34.What is the HCF of 5 and 35?
  35. 35.Write 9/72 in its simplest form. =
  36. 36.Is 21/27 in its simplest form? (a) Yes (b) No
  37. 37.Is 1/7 in its simplest form? (a) Yes (b) No
  38. 38.What is the HCF of 56 and 80?
  39. 39.What is the HCF of 4 and 36?
  40. 40.Write 9/81 in its simplest form. =

Answer key

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

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