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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 150 · 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.Is 1/6 in its simplest form? (a) No (b) Yes
  2. 2.Is 4/7 in its simplest form? (a) Yes (b) No
  3. 3.Is 3/4 in its simplest form? (a) No (b) Yes
  4. 4.What is the HCF of 20 and 32?
  5. 5.Write 2/16 in its simplest form. =
  6. 6.Is 6/16 in its simplest form? (a) No (b) Yes
  7. 7.What is the HCF of 35 and 63?
  8. 8.Write 40/45 in its simplest form. =
  9. 9.What is the HCF of 4 and 12?
  10. 10.Write 8/14 in its simplest form. =
  11. 11.Write 54/63 in its simplest form. =
  12. 12.What is the HCF of 4 and 24?
  13. 13.Is 5/8 in its simplest form? (a) No (b) Yes
  14. 14.Write 54/60 in its simplest form. =
  15. 15.Is 21/27 in its simplest form? (a) No (b) Yes
  16. 16.Write 81/90 in its simplest form. =
  17. 17.Is 2/3 in its simplest form? (a) Yes (b) No
  18. 18.What is the HCF of 7 and 35?
  19. 19.Write 20/36 in its simplest form. =
  20. 20.Is 20/32 in its simplest form? (a) Yes (b) No
  21. 21.Write 6/21 in its simplest form. =
  22. 22.Write 45/72 in its simplest form. =
  23. 23.Write 5/30 in its simplest form. =
  24. 24.Write 18/24 in its simplest form. =
  25. 25.What is the HCF of 40 and 45?
  26. 26.Write 8/48 in its simplest form. =
  27. 27.Is 1/9 in its simplest form? (a) No (b) Yes
  28. 28.Is 8/9 in its simplest form? (a) Yes (b) No
  29. 29.Is 1/5 in its simplest form? (a) No (b) Yes
  30. 30.Is 4/5 in its simplest form? (a) No (b) Yes
  31. 31.What is the HCF of 2 and 16?
  32. 32.Is 36/40 in its simplest form? (a) No (b) Yes
  33. 33.Write 4/28 in its simplest form. =
  34. 34.Write 7/42 in its simplest form. =
  35. 35.What is the HCF of 4 and 16?
  36. 36.Is 18/30 in its simplest form? (a) Yes (b) No
  37. 37.Write 18/81 in its simplest form. =
  38. 38.Write 4/16 in its simplest form. =
  39. 39.Write 9/27 in its simplest form. =
  40. 40.What is the HCF of 8 and 40?

Answer key

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

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