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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 627 · 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 9/36 in its simplest form. =
  2. 2.What is the HCF of 72 and 80?
  3. 3.Is 1/9 in its simplest form? (a) No (b) Yes
  4. 4.What is the HCF of 36 and 45?
  5. 5.Is 4/9 in its simplest form? (a) No (b) Yes
  6. 6.Write 28/35 in its simplest form. =
  7. 7.Is 3/4 in its simplest form? (a) Yes (b) No
  8. 8.What is the HCF of 3 and 12?
  9. 9.What is the HCF of 40 and 48?
  10. 10.Is 3/8 in its simplest form? (a) No (b) Yes
  11. 11.Is 28/32 in its simplest form? (a) No (b) Yes
  12. 12.What is the HCF of 10 and 16?
  13. 13.What is the HCF of 18 and 27?
  14. 14.Write 15/21 in its simplest form. =
  15. 15.Write 8/20 in its simplest form. =
  16. 16.Is 12/21 in its simplest form? (a) No (b) Yes
  17. 17.What is the HCF of 6 and 14?
  18. 18.What is the HCF of 10 and 15?
  19. 19.Write 18/81 in its simplest form. =
  20. 20.Is 9/21 in its simplest form? (a) No (b) Yes
  21. 21.What is the HCF of 9 and 21?
  22. 22.What is the HCF of 18 and 63?
  23. 23.Write 28/32 in its simplest form. =
  24. 24.Write 5/25 in its simplest form. =
  25. 25.Is 4/7 in its simplest form? (a) No (b) Yes
  26. 26.What is the HCF of 6 and 30?
  27. 27.What is the HCF of 6 and 8?
  28. 28.Write 3/12 in its simplest form. =
  29. 29.What is the HCF of 27 and 36?
  30. 30.What is the HCF of 35 and 56?
  31. 31.Is 3/21 in its simplest form? (a) No (b) Yes
  32. 32.Write 6/10 in its simplest form. =
  33. 33.Is 35/50 in its simplest form? (a) Yes (b) No
  34. 34.What is the HCF of 9 and 45?
  35. 35.What is the HCF of 24 and 40?
  36. 36.What is the HCF of 9 and 72?
  37. 37.Write 45/63 in its simplest form. =
  38. 38.What is the HCF of 10 and 25?
  39. 39.Is 3/12 in its simplest form? (a) Yes (b) No
  40. 40.Write 32/72 in its simplest form. =

Answer key

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

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