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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 30 · 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 20/36 in its simplest form. =
  2. 2.What is the HCF of 18 and 63?
  3. 3.What is the HCF of 7 and 70?
  4. 4.Is 7/9 in its simplest form? (a) Yes (b) No
  5. 5.What is the HCF of 56 and 80?
  6. 6.Write 18/30 in its simplest form. =
  7. 7.Is 3/10 in its simplest form? (a) No (b) Yes
  8. 8.What is the HCF of 15 and 40?
  9. 9.Write 16/28 in its simplest form. =
  10. 10.Write 9/90 in its simplest form. =
  11. 11.Is 36/40 in its simplest form? (a) No (b) Yes
  12. 12.Write 25/45 in its simplest form. =
  13. 13.What is the HCF of 21 and 35?
  14. 14.Is 4/5 in its simplest form? (a) Yes (b) No
  15. 15.Is 4/7 in its simplest form? (a) No (b) Yes
  16. 16.What is the HCF of 6 and 16?
  17. 17.Write 25/30 in its simplest form. =
  18. 18.Write 2/20 in its simplest form. =
  19. 19.Write 8/40 in its simplest form. =
  20. 20.Write 8/28 in its simplest form. =
  21. 21.Write 4/10 in its simplest form. =
  22. 22.Is 12/15 in its simplest form? (a) No (b) Yes
  23. 23.Write 7/28 in its simplest form. =
  24. 24.What is the HCF of 6 and 12?
  25. 25.What is the HCF of 10 and 14?
  26. 26.What is the HCF of 7 and 21?
  27. 27.What is the HCF of 56 and 64?
  28. 28.Write 18/45 in its simplest form. =
  29. 29.Write 8/24 in its simplest form. =
  30. 30.Write 18/21 in its simplest form. =
  31. 31.What is the HCF of 4 and 24?
  32. 32.Write 9/27 in its simplest form. =
  33. 33.Write 36/40 in its simplest form. =
  34. 34.Write 7/49 in its simplest form. =
  35. 35.Is 3/21 in its simplest form? (a) Yes (b) No
  36. 36.Write 16/56 in its simplest form. =
  37. 37.Is 3/4 in its simplest form? (a) Yes (b) No
  38. 38.Write 15/27 in its simplest form. =
  39. 39.Write 7/63 in its simplest form. =
  40. 40.Is 5/20 in its simplest form? (a) No (b) Yes

Answer key

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

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