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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 402 · 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 1/6 in its simplest form? (a) No (b) Yes
  2. 2.Is 15/50 in its simplest form? (a) No (b) Yes
  3. 3.Write 8/18 in its simplest form. =
  4. 4.What is the HCF of 9 and 90?
  5. 5.Write 8/40 in its simplest form. =
  6. 6.Write 72/81 in its simplest form. =
  7. 7.Is 5/6 in its simplest form? (a) No (b) Yes
  8. 8.Write 7/42 in its simplest form. =
  9. 9.Is 2/3 in its simplest form? (a) No (b) Yes
  10. 10.What is the HCF of 14 and 20?
  11. 11.Write 9/30 in its simplest form. =
  12. 12.What is the HCF of 15 and 27?
  13. 13.Is 15/25 in its simplest form? (a) No (b) Yes
  14. 14.What is the HCF of 56 and 63?
  15. 15.What is the HCF of 21 and 27?
  16. 16.Is 12/54 in its simplest form? (a) Yes (b) No
  17. 17.What is the HCF of 45 and 72?
  18. 18.Write 3/30 in its simplest form. =
  19. 19.Is 12/14 in its simplest form? (a) Yes (b) No
  20. 20.What is the HCF of 27 and 72?
  21. 21.Write 16/72 in its simplest form. =
  22. 22.Is 7/8 in its simplest form? (a) No (b) Yes
  23. 23.Write 9/45 in its simplest form. =
  24. 24.Write 18/24 in its simplest form. =
  25. 25.What is the HCF of 7 and 63?
  26. 26.Is 4/24 in its simplest form? (a) No (b) Yes
  27. 27.Is 1/7 in its simplest form? (a) Yes (b) No
  28. 28.What is the HCF of 9 and 27?
  29. 29.Write 30/35 in its simplest form. =
  30. 30.What is the HCF of 3 and 6?
  31. 31.Write 63/81 in its simplest form. =
  32. 32.Write 54/63 in its simplest form. =
  33. 33.Write 4/32 in its simplest form. =
  34. 34.What is the HCF of 2 and 8?
  35. 35.What is the HCF of 6 and 24?
  36. 36.What is the HCF of 9 and 21?
  37. 37.Write 4/40 in its simplest form. =
  38. 38.Write 24/30 in its simplest form. =
  39. 39.Is 30/48 in its simplest form? (a) Yes (b) No
  40. 40.Is 4/5 in its simplest form? (a) No (b) Yes

Answer key

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

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