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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 358 · 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 8/24 in its simplest form. =
  2. 2.What is the HCF of 18 and 21?
  3. 3.Is 1/9 in its simplest form? (a) Yes (b) No
  4. 4.Write 8/72 in its simplest form. =
  5. 5.What is the HCF of 28 and 63?
  6. 6.Write 21/24 in its simplest form. =
  7. 7.Write 7/14 in its simplest form. =
  8. 8.Is 14/18 in its simplest form? (a) No (b) Yes
  9. 9.Write 6/18 in its simplest form. =
  10. 10.Write 40/45 in its simplest form. =
  11. 11.What is the HCF of 63 and 70?
  12. 12.Write 30/42 in its simplest form. =
  13. 13.What is the HCF of 4 and 18?
  14. 14.Write 20/32 in its simplest form. =
  15. 15.Is 1/7 in its simplest form? (a) No (b) Yes
  16. 16.What is the HCF of 35 and 42?
  17. 17.Is 1/4 in its simplest form? (a) Yes (b) No
  18. 18.Write 2/20 in its simplest form. =
  19. 19.Is 10/45 in its simplest form? (a) No (b) Yes
  20. 20.Write 14/35 in its simplest form. =
  21. 21.What is the HCF of 15 and 27?
  22. 22.What is the HCF of 15 and 21?
  23. 23.What is the HCF of 24 and 80?
  24. 24.Write 81/90 in its simplest form. =
  25. 25.Write 8/12 in its simplest form. =
  26. 26.Write 15/25 in its simplest form. =
  27. 27.Is 9/24 in its simplest form? (a) No (b) Yes
  28. 28.Write 8/48 in its simplest form. =
  29. 29.Write 49/56 in its simplest form. =
  30. 30.Is 21/24 in its simplest form? (a) Yes (b) No
  31. 31.Write 6/30 in its simplest form. =
  32. 32.Write 6/14 in its simplest form. =
  33. 33.Is 3/21 in its simplest form? (a) Yes (b) No
  34. 34.Is 4/9 in its simplest form? (a) No (b) Yes
  35. 35.Is 32/36 in its simplest form? (a) No (b) Yes
  36. 36.Write 8/40 in its simplest form. =
  37. 37.What is the HCF of 24 and 30?
  38. 38.What is the HCF of 36 and 63?
  39. 39.What is the HCF of 10 and 14?
  40. 40.Write 24/42 in its simplest form. =

Answer key

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

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