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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 806 · 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 10/18 in its simplest form. =
  2. 2.What is the HCF of 24 and 32?
  3. 3.Is 2/5 in its simplest form? (a) No (b) Yes
  4. 4.Is 5/8 in its simplest form? (a) Yes (b) No
  5. 5.Write 63/81 in its simplest form. =
  6. 6.Write 24/27 in its simplest form. =
  7. 7.Is 5/15 in its simplest form? (a) No (b) Yes
  8. 8.Write 4/16 in its simplest form. =
  9. 9.What is the HCF of 20 and 36?
  10. 10.Is 8/28 in its simplest form? (a) No (b) Yes
  11. 11.What is the HCF of 32 and 40?
  12. 12.What is the HCF of 8 and 18?
  13. 13.Is 1/9 in its simplest form? (a) No (b) Yes
  14. 14.Write 10/14 in its simplest form. =
  15. 15.Write 27/63 in its simplest form. =
  16. 16.What is the HCF of 21 and 24?
  17. 17.Write 12/15 in its simplest form. =
  18. 18.Write 18/20 in its simplest form. =
  19. 19.Write 64/72 in its simplest form. =
  20. 20.Write 81/90 in its simplest form. =
  21. 21.What is the HCF of 63 and 81?
  22. 22.Write 18/21 in its simplest form. =
  23. 23.Is 4/9 in its simplest form? (a) No (b) Yes
  24. 24.What is the HCF of 16 and 18?
  25. 25.What is the HCF of 18 and 63?
  26. 26.What is the HCF of 6 and 30?
  27. 27.What is the HCF of 15 and 25?
  28. 28.Write 24/56 in its simplest form. =
  29. 29.What is the HCF of 4 and 20?
  30. 30.Write 6/9 in its simplest form. =
  31. 31.Write 30/42 in its simplest form. =
  32. 32.Write 18/30 in its simplest form. =
  33. 33.Write 21/49 in its simplest form. =
  34. 34.Is 18/42 in its simplest form? (a) Yes (b) No
  35. 35.What is the HCF of 4 and 6?
  36. 36.Write 49/70 in its simplest form. =
  37. 37.What is the HCF of 36 and 45?
  38. 38.Is 24/30 in its simplest form? (a) Yes (b) No
  39. 39.Is 6/42 in its simplest form? (a) Yes (b) No
  40. 40.What is the HCF of 12 and 28?

Answer key

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

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