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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 650 · 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 64/72 in its simplest form. =
  2. 2.Is 4/7 in its simplest form? (a) Yes (b) No
  3. 3.What is the HCF of 20 and 45?
  4. 4.Write 5/25 in its simplest form. =
  5. 5.Write 21/27 in its simplest form. =
  6. 6.Write 3/12 in its simplest form. =
  7. 7.Write 6/15 in its simplest form. =
  8. 8.What is the HCF of 4 and 32?
  9. 9.Is 3/5 in its simplest form? (a) Yes (b) No
  10. 10.What is the HCF of 16 and 40?
  11. 11.Write 36/63 in its simplest form. =
  12. 12.What is the HCF of 6 and 42?
  13. 13.What is the HCF of 3 and 27?
  14. 14.Write 9/15 in its simplest form. =
  15. 15.What is the HCF of 7 and 63?
  16. 16.Write 6/21 in its simplest form. =
  17. 17.What is the HCF of 6 and 18?
  18. 18.Write 8/18 in its simplest form. =
  19. 19.What is the HCF of 7 and 49?
  20. 20.Write 6/16 in its simplest form. =
  21. 21.Is 9/21 in its simplest form? (a) Yes (b) No
  22. 22.Is 9/24 in its simplest form? (a) No (b) Yes
  23. 23.Is 5/20 in its simplest form? (a) No (b) Yes
  24. 24.Write 4/32 in its simplest form. =
  25. 25.Is 25/45 in its simplest form? (a) No (b) Yes
  26. 26.Is 3/15 in its simplest form? (a) No (b) Yes
  27. 27.What is the HCF of 45 and 54?
  28. 28.Write 7/35 in its simplest form. =
  29. 29.Write 8/14 in its simplest form. =
  30. 30.Write 20/24 in its simplest form. =
  31. 31.Is 18/30 in its simplest form? (a) No (b) Yes
  32. 32.Is 3/9 in its simplest form? (a) Yes (b) No
  33. 33.Is 3/10 in its simplest form? (a) No (b) Yes
  34. 34.Write 27/45 in its simplest form. =
  35. 35.What is the HCF of 3 and 24?
  36. 36.Is 5/50 in its simplest form? (a) Yes (b) No
  37. 37.What is the HCF of 24 and 28?
  38. 38.Write 14/21 in its simplest form. =
  39. 39.What is the HCF of 9 and 27?
  40. 40.Is 28/40 in its simplest form? (a) No (b) Yes

Answer key

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

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