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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 792 · 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 40/72 in its simplest form. =
  2. 2.Write 45/81 in its simplest form. =
  3. 3.Write 18/30 in its simplest form. =
  4. 4.Write 3/21 in its simplest form. =
  5. 5.Is 21/27 in its simplest form? (a) Yes (b) No
  6. 6.What is the HCF of 36 and 40?
  7. 7.Write 4/14 in its simplest form. =
  8. 8.Is 6/36 in its simplest form? (a) No (b) Yes
  9. 9.What is the HCF of 12 and 15?
  10. 10.What is the HCF of 16 and 28?
  11. 11.Is 6/15 in its simplest form? (a) Yes (b) No
  12. 12.Write 32/40 in its simplest form. =
  13. 13.Write 16/40 in its simplest form. =
  14. 14.Write 8/10 in its simplest form. =
  15. 15.Is 1/8 in its simplest form? (a) Yes (b) No
  16. 16.What is the HCF of 27 and 30?
  17. 17.Write 49/70 in its simplest form. =
  18. 18.Write 12/20 in its simplest form. =
  19. 19.What is the HCF of 20 and 24?
  20. 20.Write 42/60 in its simplest form. =
  21. 21.What is the HCF of 5 and 40?
  22. 22.Write 27/90 in its simplest form. =
  23. 23.Write 8/80 in its simplest form. =
  24. 24.Is 42/54 in its simplest form? (a) Yes (b) No
  25. 25.What is the HCF of 12 and 21?
  26. 26.What is the HCF of 9 and 54?
  27. 27.What is the HCF of 16 and 40?
  28. 28.What is the HCF of 56 and 80?
  29. 29.Write 21/56 in its simplest form. =
  30. 30.What is the HCF of 16 and 18?
  31. 31.What is the HCF of 2 and 14?
  32. 32.Is 15/18 in its simplest form? (a) Yes (b) No
  33. 33.Is 4/12 in its simplest form? (a) No (b) Yes
  34. 34.Is 3/4 in its simplest form? (a) No (b) Yes
  35. 35.What is the HCF of 49 and 56?
  36. 36.Write 45/54 in its simplest form. =
  37. 37.Write 8/72 in its simplest form. =
  38. 38.Is 5/9 in its simplest form? (a) No (b) Yes
  39. 39.Write 12/27 in its simplest form. =
  40. 40.What is the HCF of 5 and 25?

Answer key

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

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