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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 67 · 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 10/45 in its simplest form. =
  2. 2.Write 28/35 in its simplest form. =
  3. 3.What is the HCF of 3 and 9?
  4. 4.Is 2/5 in its simplest form? (a) No (b) Yes
  5. 5.Is 1/6 in its simplest form? (a) No (b) Yes
  6. 6.Write 4/10 in its simplest form. =
  7. 7.Write 28/49 in its simplest form. =
  8. 8.Is 45/50 in its simplest form? (a) No (b) Yes
  9. 9.What is the HCF of 40 and 64?
  10. 10.Is 24/42 in its simplest form? (a) Yes (b) No
  11. 11.Write 9/18 in its simplest form. =
  12. 12.Write 35/45 in its simplest form. =
  13. 13.Write 27/30 in its simplest form. =
  14. 14.Write 4/28 in its simplest form. =
  15. 15.Is 2/3 in its simplest form? (a) No (b) Yes
  16. 16.Write 28/36 in its simplest form. =
  17. 17.Write 2/20 in its simplest form. =
  18. 18.Is 20/36 in its simplest form? (a) Yes (b) No
  19. 19.Is 8/9 in its simplest form? (a) No (b) Yes
  20. 20.Is 35/50 in its simplest form? (a) No (b) Yes
  21. 21.Is 5/9 in its simplest form? (a) No (b) Yes
  22. 22.What is the HCF of 4 and 40?
  23. 23.Is 54/60 in its simplest form? (a) No (b) Yes
  24. 24.Is 12/20 in its simplest form? (a) No (b) Yes
  25. 25.Write 18/30 in its simplest form. =
  26. 26.Write 4/24 in its simplest form. =
  27. 27.Write 21/49 in its simplest form. =
  28. 28.Write 54/63 in its simplest form. =
  29. 29.Write 35/40 in its simplest form. =
  30. 30.What is the HCF of 6 and 30?
  31. 31.Write 9/45 in its simplest form. =
  32. 32.Is 21/27 in its simplest form? (a) No (b) Yes
  33. 33.Write 9/12 in its simplest form. =
  34. 34.Is 5/35 in its simplest form? (a) Yes (b) No
  35. 35.What is the HCF of 4 and 8?
  36. 36.What is the HCF of 15 and 20?
  37. 37.Write 6/18 in its simplest form. =
  38. 38.Write 6/15 in its simplest form. =
  39. 39.Is 12/21 in its simplest form? (a) Yes (b) No
  40. 40.What is the HCF of 4 and 20?

Answer key

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

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