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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 945 · 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.Is 4/9 in its simplest form? (a) No (b) Yes
  2. 2.What is the HCF of 7 and 70?
  3. 3.Write 4/18 in its simplest form. =
  4. 4.Write 15/18 in its simplest form. =
  5. 5.Is 3/18 in its simplest form? (a) No (b) Yes
  6. 6.What is the HCF of 21 and 24?
  7. 7.Is 1/7 in its simplest form? (a) Yes (b) No
  8. 8.Write 8/24 in its simplest form. =
  9. 9.Is 3/8 in its simplest form? (a) Yes (b) No
  10. 10.Write 20/24 in its simplest form. =
  11. 11.Write 9/30 in its simplest form. =
  12. 12.What is the HCF of 9 and 90?
  13. 13.What is the HCF of 14 and 49?
  14. 14.Is 9/10 in its simplest form? (a) No (b) Yes
  15. 15.Is 24/54 in its simplest form? (a) Yes (b) No
  16. 16.Write 7/63 in its simplest form. =
  17. 17.What is the HCF of 28 and 40?
  18. 18.Write 7/14 in its simplest form. =
  19. 19.Is 48/54 in its simplest form? (a) No (b) Yes
  20. 20.What is the HCF of 6 and 18?
  21. 21.Write 3/12 in its simplest form. =
  22. 22.Write 12/40 in its simplest form. =
  23. 23.Is 3/21 in its simplest form? (a) Yes (b) No
  24. 24.Write 64/72 in its simplest form. =
  25. 25.Write 16/18 in its simplest form. =
  26. 26.Write 2/20 in its simplest form. =
  27. 27.Is 3/7 in its simplest form? (a) Yes (b) No
  28. 28.What is the HCF of 4 and 32?
  29. 29.Is 21/24 in its simplest form? (a) Yes (b) No
  30. 30.Write 45/81 in its simplest form. =
  31. 31.Write 25/35 in its simplest form. =
  32. 32.Write 4/16 in its simplest form. =
  33. 33.Write 36/45 in its simplest form. =
  34. 34.Write 24/40 in its simplest form. =
  35. 35.Write 8/36 in its simplest form. =
  36. 36.Is 2/9 in its simplest form? (a) Yes (b) No
  37. 37.What is the HCF of 16 and 72?
  38. 38.Write 14/21 in its simplest form. =
  39. 39.Write 3/24 in its simplest form. =
  40. 40.Is 2/3 in its simplest form? (a) No (b) Yes

Answer key

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

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