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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 598 · 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 30 and 42?
  2. 2.What is the HCF of 16 and 72?
  3. 3.Is 2/4 in its simplest form? (a) Yes (b) No
  4. 4.What is the HCF of 32 and 40?
  5. 5.Write 54/60 in its simplest form. =
  6. 6.Write 16/24 in its simplest form. =
  7. 7.Is 3/7 in its simplest form? (a) No (b) Yes
  8. 8.Write 18/21 in its simplest form. =
  9. 9.Write 4/8 in its simplest form. =
  10. 10.What is the HCF of 8 and 48?
  11. 11.Write 12/15 in its simplest form. =
  12. 12.What is the HCF of 21 and 70?
  13. 13.What is the HCF of 4 and 18?
  14. 14.What is the HCF of 14 and 21?
  15. 15.Is 28/36 in its simplest form? (a) Yes (b) No
  16. 16.What is the HCF of 40 and 45?
  17. 17.Write 16/40 in its simplest form. =
  18. 18.What is the HCF of 18 and 81?
  19. 19.Write 10/14 in its simplest form. =
  20. 20.Is 4/28 in its simplest form? (a) Yes (b) No
  21. 21.What is the HCF of 28 and 63?
  22. 22.Is 4/9 in its simplest form? (a) No (b) Yes
  23. 23.Write 9/72 in its simplest form. =
  24. 24.Is 6/7 in its simplest form? (a) Yes (b) No
  25. 25.Write 3/6 in its simplest form. =
  26. 26.Is 10/14 in its simplest form? (a) Yes (b) No
  27. 27.Write 12/18 in its simplest form. =
  28. 28.Write 35/42 in its simplest form. =
  29. 29.What is the HCF of 24 and 56?
  30. 30.Is 5/9 in its simplest form? (a) No (b) Yes
  31. 31.Is 5/7 in its simplest form? (a) Yes (b) No
  32. 32.What is the HCF of 6 and 14?
  33. 33.What is the HCF of 8 and 80?
  34. 34.Is 1/7 in its simplest form? (a) No (b) Yes
  35. 35.Is 42/54 in its simplest form? (a) No (b) Yes
  36. 36.Write 9/54 in its simplest form. =
  37. 37.Is 3/10 in its simplest form? (a) No (b) Yes
  38. 38.Write 8/20 in its simplest form. =
  39. 39.Is 12/18 in its simplest form? (a) No (b) Yes
  40. 40.Write 15/25 in its simplest form. =

Answer key

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

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