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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 443 · 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 9 and 45?
  2. 2.Write 27/45 in its simplest form. =
  3. 3.Is 4/7 in its simplest form? (a) No (b) Yes
  4. 4.What is the HCF of 2 and 20?
  5. 5.Write 40/48 in its simplest form. =
  6. 6.What is the HCF of 7 and 35?
  7. 7.Write 28/40 in its simplest form. =
  8. 8.Is 25/40 in its simplest form? (a) No (b) Yes
  9. 9.Write 16/72 in its simplest form. =
  10. 10.Is 4/10 in its simplest form? (a) Yes (b) No
  11. 11.What is the HCF of 63 and 70?
  12. 12.Write 3/15 in its simplest form. =
  13. 13.Is 6/60 in its simplest form? (a) Yes (b) No
  14. 14.Is 7/10 in its simplest form? (a) Yes (b) No
  15. 15.Write 36/63 in its simplest form. =
  16. 16.Is 4/24 in its simplest form? (a) No (b) Yes
  17. 17.Write 15/21 in its simplest form. =
  18. 18.Write 16/18 in its simplest form. =
  19. 19.What is the HCF of 2 and 18?
  20. 20.Write 5/25 in its simplest form. =
  21. 21.Is 2/7 in its simplest form? (a) No (b) Yes
  22. 22.Write 20/25 in its simplest form. =
  23. 23.Write 6/54 in its simplest form. =
  24. 24.Is 10/18 in its simplest form? (a) No (b) Yes
  25. 25.What is the HCF of 28 and 49?
  26. 26.What is the HCF of 15 and 24?
  27. 27.Is 12/32 in its simplest form? (a) Yes (b) No
  28. 28.Write 16/24 in its simplest form. =
  29. 29.Is 8/12 in its simplest form? (a) No (b) Yes
  30. 30.What is the HCF of 27 and 36?
  31. 31.Write 8/56 in its simplest form. =
  32. 32.Is 3/8 in its simplest form? (a) Yes (b) No
  33. 33.What is the HCF of 21 and 28?
  34. 34.Is 6/36 in its simplest form? (a) No (b) Yes
  35. 35.What is the HCF of 15 and 18?
  36. 36.Is 4/9 in its simplest form? (a) No (b) Yes
  37. 37.Write 9/12 in its simplest form. =
  38. 38.Is 20/28 in its simplest form? (a) No (b) Yes
  39. 39.Is 3/4 in its simplest form? (a) No (b) Yes
  40. 40.What is the HCF of 27 and 45?

Answer key

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

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