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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 871 · 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 15/40 in its simplest form. =
  2. 2.What is the HCF of 9 and 63?
  3. 3.Write 21/49 in its simplest form. =
  4. 4.Is 15/35 in its simplest form? (a) No (b) Yes
  5. 5.Write 6/21 in its simplest form. =
  6. 6.Is 3/10 in its simplest form? (a) No (b) Yes
  7. 7.Write 8/48 in its simplest form. =
  8. 8.Write 7/70 in its simplest form. =
  9. 9.What is the HCF of 9 and 18?
  10. 10.Write 10/15 in its simplest form. =
  11. 11.What is the HCF of 63 and 70?
  12. 12.Write 6/24 in its simplest form. =
  13. 13.Write 14/20 in its simplest form. =
  14. 14.Is 3/21 in its simplest form? (a) Yes (b) No
  15. 15.Is 54/60 in its simplest form? (a) No (b) Yes
  16. 16.What is the HCF of 8 and 28?
  17. 17.Write 27/63 in its simplest form. =
  18. 18.What is the HCF of 4 and 32?
  19. 19.Write 24/27 in its simplest form. =
  20. 20.Is 1/2 in its simplest form? (a) No (b) Yes
  21. 21.Write 3/6 in its simplest form. =
  22. 22.What is the HCF of 25 and 30?
  23. 23.Is 9/10 in its simplest form? (a) Yes (b) No
  24. 24.What is the HCF of 4 and 28?
  25. 25.Write 3/18 in its simplest form. =
  26. 26.Is 8/9 in its simplest form? (a) Yes (b) No
  27. 27.Write 9/36 in its simplest form. =
  28. 28.Write 2/16 in its simplest form. =
  29. 29.Is 28/40 in its simplest form? (a) Yes (b) No
  30. 30.Write 18/24 in its simplest form. =
  31. 31.Write 42/48 in its simplest form. =
  32. 32.What is the HCF of 8 and 18?
  33. 33.Write 21/28 in its simplest form. =
  34. 34.What is the HCF of 32 and 40?
  35. 35.Write 28/49 in its simplest form. =
  36. 36.Write 7/21 in its simplest form. =
  37. 37.What is the HCF of 18 and 45?
  38. 38.Write 27/90 in its simplest form. =
  39. 39.Write 21/24 in its simplest form. =
  40. 40.Is 7/9 in its simplest form? (a) Yes (b) No

Answer key

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

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