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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 400 · 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 72/80 in its simplest form. =
  2. 2.What is the HCF of 16 and 40?
  3. 3.What is the HCF of 3 and 12?
  4. 4.What is the HCF of 8 and 80?
  5. 5.What is the HCF of 63 and 70?
  6. 6.Write 24/56 in its simplest form. =
  7. 7.Is 15/50 in its simplest form? (a) No (b) Yes
  8. 8.Is 6/14 in its simplest form? (a) No (b) Yes
  9. 9.Write 3/21 in its simplest form. =
  10. 10.Write 36/63 in its simplest form. =
  11. 11.Is 5/25 in its simplest form? (a) Yes (b) No
  12. 12.Is 3/8 in its simplest form? (a) Yes (b) No
  13. 13.What is the HCF of 12 and 15?
  14. 14.What is the HCF of 24 and 56?
  15. 15.Write 9/12 in its simplest form. =
  16. 16.Write 9/18 in its simplest form. =
  17. 17.Write 5/10 in its simplest form. =
  18. 18.Is 2/18 in its simplest form? (a) No (b) Yes
  19. 19.Write 18/42 in its simplest form. =
  20. 20.Write 8/10 in its simplest form. =
  21. 21.Is 10/18 in its simplest form? (a) Yes (b) No
  22. 22.What is the HCF of 12 and 18?
  23. 23.Write 5/25 in its simplest form. =
  24. 24.Is 9/10 in its simplest form? (a) Yes (b) No
  25. 25.What is the HCF of 81 and 90?
  26. 26.Write 3/15 in its simplest form. =
  27. 27.Write 48/56 in its simplest form. =
  28. 28.Write 32/40 in its simplest form. =
  29. 29.What is the HCF of 12 and 30?
  30. 30.Write 6/14 in its simplest form. =
  31. 31.Is 7/9 in its simplest form? (a) No (b) Yes
  32. 32.What is the HCF of 4 and 16?
  33. 33.Is 18/60 in its simplest form? (a) No (b) Yes
  34. 34.What is the HCF of 14 and 21?
  35. 35.Is 5/9 in its simplest form? (a) Yes (b) No
  36. 36.Write 10/12 in its simplest form. =
  37. 37.Write 15/21 in its simplest form. =
  38. 38.What is the HCF of 18 and 42?
  39. 39.What is the HCF of 6 and 10?
  40. 40.Write 24/80 in its simplest form. =

Answer key

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

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