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Simplest Form Fractions Worksheet

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

Answer key

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

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