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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 260 · 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 16 and 28?
  2. 2.Write 5/50 in its simplest form. =
  3. 3.Is 18/20 in its simplest form? (a) No (b) Yes
  4. 4.Write 27/36 in its simplest form. =
  5. 5.Write 12/16 in its simplest form. =
  6. 6.Write 63/72 in its simplest form. =
  7. 7.Is 15/21 in its simplest form? (a) Yes (b) No
  8. 8.What is the HCF of 8 and 56?
  9. 9.What is the HCF of 4 and 20?
  10. 10.What is the HCF of 9 and 18?
  11. 11.Is 4/5 in its simplest form? (a) Yes (b) No
  12. 12.What is the HCF of 12 and 40?
  13. 13.What is the HCF of 6 and 21?
  14. 14.Is 4/7 in its simplest form? (a) Yes (b) No
  15. 15.Is 3/10 in its simplest form? (a) No (b) Yes
  16. 16.What is the HCF of 32 and 40?
  17. 17.Write 27/45 in its simplest form. =
  18. 18.Is 5/9 in its simplest form? (a) Yes (b) No
  19. 19.What is the HCF of 6 and 20?
  20. 20.Write 42/49 in its simplest form. =
  21. 21.What is the HCF of 16 and 20?
  22. 22.Write 45/50 in its simplest form. =
  23. 23.What is the HCF of 42 and 60?
  24. 24.Write 21/56 in its simplest form. =
  25. 25.Is 18/24 in its simplest form? (a) No (b) Yes
  26. 26.Is 15/24 in its simplest form? (a) No (b) Yes
  27. 27.What is the HCF of 6 and 8?
  28. 28.Write 72/81 in its simplest form. =
  29. 29.Write 4/28 in its simplest form. =
  30. 30.Write 8/12 in its simplest form. =
  31. 31.What is the HCF of 5 and 20?
  32. 32.Write 4/12 in its simplest form. =
  33. 33.Write 24/27 in its simplest form. =
  34. 34.Write 2/8 in its simplest form. =
  35. 35.Is 1/7 in its simplest form? (a) No (b) Yes
  36. 36.Is 6/18 in its simplest form? (a) Yes (b) No
  37. 37.Write 63/70 in its simplest form. =
  38. 38.What is the HCF of 18 and 42?
  39. 39.What is the HCF of 8 and 28?
  40. 40.Write 20/28 in its simplest form. =

Answer key

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

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