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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 687 · 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.Is 2/6 in its simplest form? (a) Yes (b) No
  2. 2.Write 12/14 in its simplest form. =
  3. 3.Write 16/28 in its simplest form. =
  4. 4.Write 3/15 in its simplest form. =
  5. 5.Write 16/24 in its simplest form. =
  6. 6.Is 5/8 in its simplest form? (a) Yes (b) No
  7. 7.Is 6/20 in its simplest form? (a) No (b) Yes
  8. 8.Write 9/72 in its simplest form. =
  9. 9.Write 15/40 in its simplest form. =
  10. 10.What is the HCF of 45 and 72?
  11. 11.Write 6/54 in its simplest form. =
  12. 12.Write 18/21 in its simplest form. =
  13. 13.Is 5/9 in its simplest form? (a) Yes (b) No
  14. 14.Is 20/35 in its simplest form? (a) Yes (b) No
  15. 15.What is the HCF of 25 and 30?
  16. 16.Write 32/72 in its simplest form. =
  17. 17.Write 10/25 in its simplest form. =
  18. 18.Write 45/81 in its simplest form. =
  19. 19.Write 18/60 in its simplest form. =
  20. 20.Write 12/28 in its simplest form. =
  21. 21.Is 3/8 in its simplest form? (a) No (b) Yes
  22. 22.Is 12/54 in its simplest form? (a) Yes (b) No
  23. 23.Is 1/3 in its simplest form? (a) Yes (b) No
  24. 24.Is 6/36 in its simplest form? (a) Yes (b) No
  25. 25.Is 10/45 in its simplest form? (a) Yes (b) No
  26. 26.Write 16/72 in its simplest form. =
  27. 27.Is 15/18 in its simplest form? (a) Yes (b) No
  28. 28.What is the HCF of 7 and 42?
  29. 29.What is the HCF of 9 and 30?
  30. 30.Write 18/81 in its simplest form. =
  31. 31.What is the HCF of 8 and 10?
  32. 32.What is the HCF of 5 and 10?
  33. 33.Is 2/9 in its simplest form? (a) No (b) Yes
  34. 34.What is the HCF of 36 and 81?
  35. 35.Is 18/60 in its simplest form? (a) No (b) Yes
  36. 36.Write 7/63 in its simplest form. =
  37. 37.Write 8/24 in its simplest form. =
  38. 38.Write 21/30 in its simplest form. =
  39. 39.Is 6/15 in its simplest form? (a) No (b) Yes
  40. 40.What is the HCF of 63 and 70?

Answer key

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

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