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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 943 · 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 18/63 in its simplest form. =
  2. 2.What is the HCF of 18 and 20?
  3. 3.Write 42/54 in its simplest form. =
  4. 4.Is 3/8 in its simplest form? (a) No (b) Yes
  5. 5.Write 21/70 in its simplest form. =
  6. 6.Is 6/10 in its simplest form? (a) Yes (b) No
  7. 7.Is 3/7 in its simplest form? (a) No (b) Yes
  8. 8.Write 72/80 in its simplest form. =
  9. 9.Write 3/12 in its simplest form. =
  10. 10.Is 1/4 in its simplest form? (a) Yes (b) No
  11. 11.Is 30/54 in its simplest form? (a) Yes (b) No
  12. 12.Write 4/20 in its simplest form. =
  13. 13.Write 12/18 in its simplest form. =
  14. 14.Is 14/18 in its simplest form? (a) Yes (b) No
  15. 15.Is 16/18 in its simplest form? (a) Yes (b) No
  16. 16.What is the HCF of 2 and 14?
  17. 17.What is the HCF of 72 and 81?
  18. 18.Is 2/8 in its simplest form? (a) No (b) Yes
  19. 19.Write 8/72 in its simplest form. =
  20. 20.What is the HCF of 8 and 10?
  21. 21.What is the HCF of 2 and 6?
  22. 22.What is the HCF of 6 and 10?
  23. 23.What is the HCF of 8 and 56?
  24. 24.What is the HCF of 40 and 72?
  25. 25.Is 3/4 in its simplest form? (a) No (b) Yes
  26. 26.Write 14/16 in its simplest form. =
  27. 27.Is 7/9 in its simplest form? (a) Yes (b) No
  28. 28.Write 24/28 in its simplest form. =
  29. 29.Write 72/81 in its simplest form. =
  30. 30.Write 16/36 in its simplest form. =
  31. 31.Is 6/12 in its simplest form? (a) No (b) Yes
  32. 32.Write 6/18 in its simplest form. =
  33. 33.Write 42/48 in its simplest form. =
  34. 34.Write 21/27 in its simplest form. =
  35. 35.What is the HCF of 8 and 12?
  36. 36.Write 7/70 in its simplest form. =
  37. 37.Write 4/18 in its simplest form. =
  38. 38.What is the HCF of 8 and 16?
  39. 39.Write 3/24 in its simplest form. =
  40. 40.What is the HCF of 6 and 8?

Answer key

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

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