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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 108 · 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 18/30 in its simplest form. =
  2. 2.What is the HCF of 4 and 32?
  3. 3.Is 4/5 in its simplest form? (a) Yes (b) No
  4. 4.What is the HCF of 28 and 40?
  5. 5.Is 1/8 in its simplest form? (a) No (b) Yes
  6. 6.Is 3/8 in its simplest form? (a) No (b) Yes
  7. 7.Write 49/56 in its simplest form. =
  8. 8.Write 16/40 in its simplest form. =
  9. 9.Write 18/20 in its simplest form. =
  10. 10.Is 12/30 in its simplest form? (a) No (b) Yes
  11. 11.Is 9/30 in its simplest form? (a) Yes (b) No
  12. 12.Is 4/7 in its simplest form? (a) Yes (b) No
  13. 13.Is 5/9 in its simplest form? (a) Yes (b) No
  14. 14.What is the HCF of 21 and 56?
  15. 15.Is 1/10 in its simplest form? (a) No (b) Yes
  16. 16.What is the HCF of 8 and 16?
  17. 17.What is the HCF of 16 and 18?
  18. 18.Is 8/20 in its simplest form? (a) Yes (b) No
  19. 19.What is the HCF of 9 and 90?
  20. 20.Write 24/80 in its simplest form. =
  21. 21.Is 5/20 in its simplest form? (a) No (b) Yes
  22. 22.Is 3/7 in its simplest form? (a) No (b) Yes
  23. 23.What is the HCF of 40 and 72?
  24. 24.What is the HCF of 3 and 18?
  25. 25.What is the HCF of 3 and 15?
  26. 26.What is the HCF of 6 and 8?
  27. 27.Is 7/8 in its simplest form? (a) No (b) Yes
  28. 28.Is 6/8 in its simplest form? (a) No (b) Yes
  29. 29.Is 14/18 in its simplest form? (a) No (b) Yes
  30. 30.What is the HCF of 15 and 50?
  31. 31.What is the HCF of 4 and 10?
  32. 32.Is 1/4 in its simplest form? (a) No (b) Yes
  33. 33.Write 6/9 in its simplest form. =
  34. 34.What is the HCF of 2 and 8?
  35. 35.What is the HCF of 24 and 56?
  36. 36.What is the HCF of 28 and 49?
  37. 37.What is the HCF of 2 and 16?
  38. 38.Write 8/12 in its simplest form. =
  39. 39.Is 8/9 in its simplest form? (a) No (b) Yes
  40. 40.Write 10/45 in its simplest form. =

Answer key

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

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