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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 12 · 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 14/21 in its simplest form. =
  2. 2.Write 9/30 in its simplest form. =
  3. 3.What is the HCF of 12 and 21?
  4. 4.Is 2/12 in its simplest form? (a) No (b) Yes
  5. 5.Is 3/10 in its simplest form? (a) Yes (b) No
  6. 6.Is 20/35 in its simplest form? (a) No (b) Yes
  7. 7.Write 5/20 in its simplest form. =
  8. 8.What is the HCF of 32 and 40?
  9. 9.What is the HCF of 6 and 36?
  10. 10.Is 1/6 in its simplest form? (a) Yes (b) No
  11. 11.Write 40/64 in its simplest form. =
  12. 12.Is 12/21 in its simplest form? (a) Yes (b) No
  13. 13.Is 21/27 in its simplest form? (a) No (b) Yes
  14. 14.Write 54/63 in its simplest form. =
  15. 15.Is 3/7 in its simplest form? (a) No (b) Yes
  16. 16.Write 21/56 in its simplest form. =
  17. 17.Is 9/30 in its simplest form? (a) No (b) Yes
  18. 18.Write 7/21 in its simplest form. =
  19. 19.Is 6/16 in its simplest form? (a) No (b) Yes
  20. 20.Is 2/9 in its simplest form? (a) Yes (b) No
  21. 21.What is the HCF of 12 and 30?
  22. 22.Is 35/50 in its simplest form? (a) No (b) Yes
  23. 23.Write 10/45 in its simplest form. =
  24. 24.Write 4/32 in its simplest form. =
  25. 25.What is the HCF of 6 and 60?
  26. 26.What is the HCF of 8 and 36?
  27. 27.Write 36/63 in its simplest form. =
  28. 28.Is 28/40 in its simplest form? (a) Yes (b) No
  29. 29.Is 1/3 in its simplest form? (a) Yes (b) No
  30. 30.Is 1/4 in its simplest form? (a) No (b) Yes
  31. 31.What is the HCF of 6 and 24?
  32. 32.What is the HCF of 72 and 81?
  33. 33.Is 14/20 in its simplest form? (a) No (b) Yes
  34. 34.Write 2/10 in its simplest form. =
  35. 35.What is the HCF of 12 and 20?
  36. 36.What is the HCF of 4 and 24?
  37. 37.Is 7/10 in its simplest form? (a) Yes (b) No
  38. 38.Write 8/24 in its simplest form. =
  39. 39.Write 4/10 in its simplest form. =
  40. 40.Write 18/20 in its simplest form. =

Answer key

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

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