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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 887 · 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 21 and 28?
  2. 2.Is 36/42 in its simplest form? (a) Yes (b) No
  3. 3.Is 2/3 in its simplest form? (a) Yes (b) No
  4. 4.Write 42/60 in its simplest form. =
  5. 5.Write 18/48 in its simplest form. =
  6. 6.Is 42/60 in its simplest form? (a) No (b) Yes
  7. 7.Write 4/12 in its simplest form. =
  8. 8.What is the HCF of 25 and 30?
  9. 9.Is 2/9 in its simplest form? (a) No (b) Yes
  10. 10.Is 4/32 in its simplest form? (a) No (b) Yes
  11. 11.Is 4/24 in its simplest form? (a) No (b) Yes
  12. 12.What is the HCF of 4 and 8?
  13. 13.What is the HCF of 18 and 21?
  14. 14.Write 9/18 in its simplest form. =
  15. 15.Write 21/24 in its simplest form. =
  16. 16.Is 30/35 in its simplest form? (a) Yes (b) No
  17. 17.Write 24/56 in its simplest form. =
  18. 18.Write 4/28 in its simplest form. =
  19. 19.Write 25/45 in its simplest form. =
  20. 20.Write 3/21 in its simplest form. =
  21. 21.Is 1/9 in its simplest form? (a) No (b) Yes
  22. 22.Write 10/15 in its simplest form. =
  23. 23.Is 5/20 in its simplest form? (a) No (b) Yes
  24. 24.What is the HCF of 21 and 30?
  25. 25.Write 18/20 in its simplest form. =
  26. 26.Write 2/14 in its simplest form. =
  27. 27.What is the HCF of 54 and 63?
  28. 28.Write 14/35 in its simplest form. =
  29. 29.What is the HCF of 27 and 45?
  30. 30.What is the HCF of 40 and 64?
  31. 31.What is the HCF of 27 and 30?
  32. 32.Write 40/56 in its simplest form. =
  33. 33.Write 6/8 in its simplest form. =
  34. 34.Write 36/45 in its simplest form. =
  35. 35.Is 18/21 in its simplest form? (a) Yes (b) No
  36. 36.What is the HCF of 5 and 45?
  37. 37.What is the HCF of 36 and 40?
  38. 38.What is the HCF of 45 and 50?
  39. 39.Is 4/10 in its simplest form? (a) No (b) Yes
  40. 40.Is 4/9 in its simplest form? (a) No (b) Yes

Answer key

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

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