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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 460 · 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 10 and 45?
  2. 2.What is the HCF of 15 and 40?
  3. 3.Write 42/48 in its simplest form. =
  4. 4.What is the HCF of 28 and 40?
  5. 5.Write 6/54 in its simplest form. =
  6. 6.What is the HCF of 24 and 42?
  7. 7.Is 2/3 in its simplest form? (a) No (b) Yes
  8. 8.What is the HCF of 45 and 50?
  9. 9.Is 9/10 in its simplest form? (a) No (b) Yes
  10. 10.Write 15/20 in its simplest form. =
  11. 11.Is 1/9 in its simplest form? (a) No (b) Yes
  12. 12.What is the HCF of 2 and 4?
  13. 13.Is 10/16 in its simplest form? (a) Yes (b) No
  14. 14.What is the HCF of 30 and 54?
  15. 15.What is the HCF of 12 and 20?
  16. 16.Write 45/63 in its simplest form. =
  17. 17.Write 8/20 in its simplest form. =
  18. 18.Write 6/30 in its simplest form. =
  19. 19.Write 10/14 in its simplest form. =
  20. 20.Is 2/9 in its simplest form? (a) Yes (b) No
  21. 21.Is 14/18 in its simplest form? (a) Yes (b) No
  22. 22.What is the HCF of 3 and 30?
  23. 23.Is 4/32 in its simplest form? (a) No (b) Yes
  24. 24.Is 3/7 in its simplest form? (a) No (b) Yes
  25. 25.Write 7/28 in its simplest form. =
  26. 26.Write 2/20 in its simplest form. =
  27. 27.What is the HCF of 21 and 56?
  28. 28.Is 12/42 in its simplest form? (a) No (b) Yes
  29. 29.What is the HCF of 3 and 12?
  30. 30.What is the HCF of 40 and 48?
  31. 31.Write 16/36 in its simplest form. =
  32. 32.Write 3/12 in its simplest form. =
  33. 33.Write 35/42 in its simplest form. =
  34. 34.Write 12/54 in its simplest form. =
  35. 35.Is 36/40 in its simplest form? (a) No (b) Yes
  36. 36.Write 2/18 in its simplest form. =
  37. 37.What is the HCF of 63 and 72?
  38. 38.What is the HCF of 6 and 48?
  39. 39.What is the HCF of 9 and 72?
  40. 40.Write 2/10 in its simplest form. =

Answer key

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

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