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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 655 · 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 36/42 in its simplest form? (a) Yes (b) No
  2. 2.What is the HCF of 18 and 63?
  3. 3.What is the HCF of 18 and 60?
  4. 4.Is 1/4 in its simplest form? (a) No (b) Yes
  5. 5.Write 42/48 in its simplest form. =
  6. 6.Is 2/5 in its simplest form? (a) No (b) Yes
  7. 7.Write 18/24 in its simplest form. =
  8. 8.Write 8/56 in its simplest form. =
  9. 9.Is 5/8 in its simplest form? (a) Yes (b) No
  10. 10.Write 18/42 in its simplest form. =
  11. 11.What is the HCF of 18 and 21?
  12. 12.What is the HCF of 7 and 21?
  13. 13.What is the HCF of 48 and 56?
  14. 14.Is 5/9 in its simplest form? (a) No (b) Yes
  15. 15.Is 16/28 in its simplest form? (a) No (b) Yes
  16. 16.Write 10/35 in its simplest form. =
  17. 17.Is 3/4 in its simplest form? (a) No (b) Yes
  18. 18.Write 64/72 in its simplest form. =
  19. 19.Write 8/10 in its simplest form. =
  20. 20.What is the HCF of 72 and 81?
  21. 21.Is 1/5 in its simplest form? (a) Yes (b) No
  22. 22.What is the HCF of 2 and 6?
  23. 23.Write 32/56 in its simplest form. =
  24. 24.Write 3/15 in its simplest form. =
  25. 25.Write 4/18 in its simplest form. =
  26. 26.Write 30/54 in its simplest form. =
  27. 27.Is 10/25 in its simplest form? (a) Yes (b) No
  28. 28.Write 3/30 in its simplest form. =
  29. 29.Is 4/7 in its simplest form? (a) Yes (b) No
  30. 30.Write 10/16 in its simplest form. =
  31. 31.Write 3/24 in its simplest form. =
  32. 32.What is the HCF of 6 and 42?
  33. 33.Is 12/18 in its simplest form? (a) No (b) Yes
  34. 34.Write 15/50 in its simplest form. =
  35. 35.Is 24/27 in its simplest form? (a) No (b) Yes
  36. 36.Write 4/12 in its simplest form. =
  37. 37.Write 5/45 in its simplest form. =
  38. 38.What is the HCF of 6 and 54?
  39. 39.Is 3/8 in its simplest form? (a) No (b) Yes
  40. 40.What is the HCF of 5 and 35?

Answer key

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

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