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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 651 · 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 63/70 in its simplest form. =
  2. 2.Is 6/27 in its simplest form? (a) Yes (b) No
  3. 3.What is the HCF of 7 and 63?
  4. 4.Write 8/20 in its simplest form. =
  5. 5.Is 8/18 in its simplest form? (a) Yes (b) No
  6. 6.What is the HCF of 5 and 20?
  7. 7.Write 3/6 in its simplest form. =
  8. 8.Write 21/28 in its simplest form. =
  9. 9.What is the HCF of 24 and 64?
  10. 10.Write 28/35 in its simplest form. =
  11. 11.Write 30/35 in its simplest form. =
  12. 12.What is the HCF of 72 and 81?
  13. 13.What is the HCF of 36 and 45?
  14. 14.Write 21/56 in its simplest form. =
  15. 15.What is the HCF of 20 and 28?
  16. 16.Write 21/49 in its simplest form. =
  17. 17.Is 36/40 in its simplest form? (a) Yes (b) No
  18. 18.What is the HCF of 15 and 21?
  19. 19.Write 7/14 in its simplest form. =
  20. 20.What is the HCF of 56 and 72?
  21. 21.Write 4/36 in its simplest form. =
  22. 22.What is the HCF of 9 and 63?
  23. 23.What is the HCF of 8 and 28?
  24. 24.Is 18/60 in its simplest form? (a) Yes (b) No
  25. 25.Write 20/24 in its simplest form. =
  26. 26.What is the HCF of 8 and 10?
  27. 27.Write 35/49 in its simplest form. =
  28. 28.What is the HCF of 15 and 18?
  29. 29.Is 5/15 in its simplest form? (a) Yes (b) No
  30. 30.Write 25/45 in its simplest form. =
  31. 31.Is 1/3 in its simplest form? (a) Yes (b) No
  32. 32.What is the HCF of 8 and 64?
  33. 33.Write 4/14 in its simplest form. =
  34. 34.Write 45/54 in its simplest form. =
  35. 35.Is 4/14 in its simplest form? (a) No (b) Yes
  36. 36.Write 6/9 in its simplest form. =
  37. 37.Write 25/30 in its simplest form. =
  38. 38.Write 14/18 in its simplest form. =
  39. 39.Is 1/7 in its simplest form? (a) No (b) Yes
  40. 40.What is the HCF of 21 and 28?

Answer key

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

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