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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 750 · 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.What is the HCF of 6 and 15?
  2. 2.Is 9/15 in its simplest form? (a) Yes (b) No
  3. 3.Is 16/20 in its simplest form? (a) Yes (b) No
  4. 4.Write 18/24 in its simplest form. =
  5. 5.What is the HCF of 2 and 12?
  6. 6.Write 35/42 in its simplest form. =
  7. 7.Write 8/56 in its simplest form. =
  8. 8.Is 2/10 in its simplest form? (a) Yes (b) No
  9. 9.Write 81/90 in its simplest form. =
  10. 10.Is 8/18 in its simplest form? (a) Yes (b) No
  11. 11.Write 4/8 in its simplest form. =
  12. 12.Write 25/45 in its simplest form. =
  13. 13.Write 48/56 in its simplest form. =
  14. 14.Write 40/45 in its simplest form. =
  15. 15.Write 56/64 in its simplest form. =
  16. 16.Is 7/9 in its simplest form? (a) No (b) Yes
  17. 17.What is the HCF of 32 and 40?
  18. 18.Is 4/16 in its simplest form? (a) Yes (b) No
  19. 19.What is the HCF of 3 and 15?
  20. 20.Write 3/24 in its simplest form. =
  21. 21.Is 3/10 in its simplest form? (a) Yes (b) No
  22. 22.Write 42/54 in its simplest form. =
  23. 23.What is the HCF of 36 and 40?
  24. 24.What is the HCF of 12 and 14?
  25. 25.What is the HCF of 18 and 24?
  26. 26.Is 3/8 in its simplest form? (a) Yes (b) No
  27. 27.Write 9/45 in its simplest form. =
  28. 28.What is the HCF of 9 and 45?
  29. 29.Write 32/72 in its simplest form. =
  30. 30.What is the HCF of 25 and 30?
  31. 31.Write 9/21 in its simplest form. =
  32. 32.Write 14/35 in its simplest form. =
  33. 33.Write 14/16 in its simplest form. =
  34. 34.Is 1/3 in its simplest form? (a) No (b) Yes
  35. 35.Write 8/36 in its simplest form. =
  36. 36.Write 63/70 in its simplest form. =
  37. 37.What is the HCF of 4 and 10?
  38. 38.What is the HCF of 8 and 24?
  39. 39.What is the HCF of 12 and 15?
  40. 40.Write 5/25 in its simplest form. =

Answer key

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

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