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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 596 · 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 36 and 42?
  2. 2.What is the HCF of 9 and 12?
  3. 3.Write 8/12 in its simplest form. =
  4. 4.Is 12/20 in its simplest form? (a) No (b) Yes
  5. 5.What is the HCF of 7 and 63?
  6. 6.What is the HCF of 56 and 80?
  7. 7.Write 14/21 in its simplest form. =
  8. 8.What is the HCF of 42 and 48?
  9. 9.What is the HCF of 18 and 45?
  10. 10.Write 9/81 in its simplest form. =
  11. 11.Write 10/15 in its simplest form. =
  12. 12.Write 64/72 in its simplest form. =
  13. 13.What is the HCF of 10 and 12?
  14. 14.Write 36/40 in its simplest form. =
  15. 15.Write 2/18 in its simplest form. =
  16. 16.What is the HCF of 28 and 49?
  17. 17.Is 1/7 in its simplest form? (a) No (b) Yes
  18. 18.What is the HCF of 30 and 54?
  19. 19.Is 3/8 in its simplest form? (a) Yes (b) No
  20. 20.Write 28/63 in its simplest form. =
  21. 21.Is 15/25 in its simplest form? (a) No (b) Yes
  22. 22.Write 2/6 in its simplest form. =
  23. 23.Is 2/5 in its simplest form? (a) Yes (b) No
  24. 24.Write 72/80 in its simplest form. =
  25. 25.What is the HCF of 4 and 12?
  26. 26.Write 6/24 in its simplest form. =
  27. 27.Is 54/60 in its simplest form? (a) Yes (b) No
  28. 28.Is 18/20 in its simplest form? (a) No (b) Yes
  29. 29.What is the HCF of 7 and 21?
  30. 30.Write 5/25 in its simplest form. =
  31. 31.Is 4/7 in its simplest form? (a) Yes (b) No
  32. 32.What is the HCF of 4 and 14?
  33. 33.What is the HCF of 30 and 48?
  34. 34.What is the HCF of 3 and 15?
  35. 35.What is the HCF of 28 and 63?
  36. 36.Write 15/24 in its simplest form. =
  37. 37.Is 4/16 in its simplest form? (a) No (b) Yes
  38. 38.What is the HCF of 27 and 90?
  39. 39.Write 7/56 in its simplest form. =
  40. 40.Is 32/36 in its simplest form? (a) Yes (b) No

Answer key

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

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