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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 979 · 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 8/72 in its simplest form. =
  2. 2.Write 15/40 in its simplest form. =
  3. 3.Write 10/18 in its simplest form. =
  4. 4.What is the HCF of 20 and 45?
  5. 5.Is 2/18 in its simplest form? (a) Yes (b) No
  6. 6.Is 8/14 in its simplest form? (a) No (b) Yes
  7. 7.What is the HCF of 9 and 30?
  8. 8.Write 16/72 in its simplest form. =
  9. 9.Write 4/8 in its simplest form. =
  10. 10.What is the HCF of 9 and 63?
  11. 11.Is 18/20 in its simplest form? (a) Yes (b) No
  12. 12.Is 10/15 in its simplest form? (a) Yes (b) No
  13. 13.Is 3/4 in its simplest form? (a) No (b) Yes
  14. 14.Is 5/25 in its simplest form? (a) Yes (b) No
  15. 15.What is the HCF of 40 and 64?
  16. 16.Write 3/27 in its simplest form. =
  17. 17.Write 28/63 in its simplest form. =
  18. 18.What is the HCF of 56 and 72?
  19. 19.Write 35/40 in its simplest form. =
  20. 20.Write 25/35 in its simplest form. =
  21. 21.What is the HCF of 18 and 24?
  22. 22.Write 8/32 in its simplest form. =
  23. 23.Write 6/27 in its simplest form. =
  24. 24.What is the HCF of 14 and 63?
  25. 25.Is 5/10 in its simplest form? (a) No (b) Yes
  26. 26.Is 8/9 in its simplest form? (a) Yes (b) No
  27. 27.Is 4/14 in its simplest form? (a) No (b) Yes
  28. 28.Is 7/9 in its simplest form? (a) No (b) Yes
  29. 29.Write 28/36 in its simplest form. =
  30. 30.Is 15/50 in its simplest form? (a) No (b) Yes
  31. 31.What is the HCF of 25 and 35?
  32. 32.What is the HCF of 2 and 8?
  33. 33.Is 6/24 in its simplest form? (a) No (b) Yes
  34. 34.What is the HCF of 18 and 21?
  35. 35.What is the HCF of 6 and 36?
  36. 36.Write 3/15 in its simplest form. =
  37. 37.What is the HCF of 4 and 40?
  38. 38.What is the HCF of 9 and 36?
  39. 39.Write 24/56 in its simplest form. =
  40. 40.Write 12/16 in its simplest form. =

Answer key

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

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