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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 757 · 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 21 and 35?
  2. 2.What is the HCF of 12 and 18?
  3. 3.Is 28/40 in its simplest form? (a) No (b) Yes
  4. 4.Is 7/10 in its simplest form? (a) No (b) Yes
  5. 5.Write 9/45 in its simplest form. =
  6. 6.Write 49/70 in its simplest form. =
  7. 7.Write 30/42 in its simplest form. =
  8. 8.Is 3/9 in its simplest form? (a) No (b) Yes
  9. 9.Is 6/7 in its simplest form? (a) No (b) Yes
  10. 10.Is 1/6 in its simplest form? (a) No (b) Yes
  11. 11.What is the HCF of 6 and 20?
  12. 12.What is the HCF of 9 and 63?
  13. 13.What is the HCF of 42 and 60?
  14. 14.Write 24/28 in its simplest form. =
  15. 15.Write 9/54 in its simplest form. =
  16. 16.What is the HCF of 72 and 81?
  17. 17.Write 18/21 in its simplest form. =
  18. 18.Write 12/42 in its simplest form. =
  19. 19.What is the HCF of 28 and 49?
  20. 20.Write 3/27 in its simplest form. =
  21. 21.Write 9/27 in its simplest form. =
  22. 22.Write 20/25 in its simplest form. =
  23. 23.Write 16/20 in its simplest form. =
  24. 24.Write 56/72 in its simplest form. =
  25. 25.What is the HCF of 5 and 30?
  26. 26.Write 5/50 in its simplest form. =
  27. 27.Write 28/40 in its simplest form. =
  28. 28.What is the HCF of 40 and 45?
  29. 29.Write 6/18 in its simplest form. =
  30. 30.What is the HCF of 4 and 28?
  31. 31.What is the HCF of 40 and 64?
  32. 32.Is 15/50 in its simplest form? (a) Yes (b) No
  33. 33.Write 14/16 in its simplest form. =
  34. 34.What is the HCF of 3 and 21?
  35. 35.Is 16/28 in its simplest form? (a) No (b) Yes
  36. 36.Write 3/9 in its simplest form. =
  37. 37.What is the HCF of 8 and 14?
  38. 38.Write 7/42 in its simplest form. =
  39. 39.Write 45/50 in its simplest form. =
  40. 40.Is 4/5 in its simplest form? (a) Yes (b) No

Answer key

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

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