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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 575 · 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 15 and 40?
  2. 2.What is the HCF of 63 and 90?
  3. 3.What is the HCF of 8 and 12?
  4. 4.Write 36/63 in its simplest form. =
  5. 5.Write 28/32 in its simplest form. =
  6. 6.Is 9/10 in its simplest form? (a) No (b) Yes
  7. 7.What is the HCF of 5 and 30?
  8. 8.Write 7/63 in its simplest form. =
  9. 9.What is the HCF of 8 and 14?
  10. 10.Write 21/28 in its simplest form. =
  11. 11.Write 8/48 in its simplest form. =
  12. 12.Write 12/16 in its simplest form. =
  13. 13.What is the HCF of 2 and 6?
  14. 14.What is the HCF of 24 and 28?
  15. 15.Is 1/2 in its simplest form? (a) No (b) Yes
  16. 16.Write 45/72 in its simplest form. =
  17. 17.Write 9/72 in its simplest form. =
  18. 18.What is the HCF of 27 and 90?
  19. 19.Is 4/16 in its simplest form? (a) Yes (b) No
  20. 20.Write 18/63 in its simplest form. =
  21. 21.What is the HCF of 18 and 60?
  22. 22.Write 35/42 in its simplest form. =
  23. 23.Write 7/35 in its simplest form. =
  24. 24.Is 8/12 in its simplest form? (a) Yes (b) No
  25. 25.Is 12/14 in its simplest form? (a) No (b) Yes
  26. 26.What is the HCF of 7 and 70?
  27. 27.What is the HCF of 10 and 16?
  28. 28.Write 64/72 in its simplest form. =
  29. 29.Is 3/24 in its simplest form? (a) No (b) Yes
  30. 30.What is the HCF of 15 and 50?
  31. 31.Write 5/15 in its simplest form. =
  32. 32.Is 2/18 in its simplest form? (a) No (b) Yes
  33. 33.Write 15/27 in its simplest form. =
  34. 34.What is the HCF of 8 and 32?
  35. 35.What is the HCF of 24 and 32?
  36. 36.What is the HCF of 42 and 54?
  37. 37.Write 4/36 in its simplest form. =
  38. 38.Write 8/20 in its simplest form. =
  39. 39.What is the HCF of 48 and 54?
  40. 40.Write 28/63 in its simplest form. =

Answer key

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

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