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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 782 · 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 15 and 20?
  2. 2.What is the HCF of 9 and 63?
  3. 3.What is the HCF of 18 and 21?
  4. 4.Write 6/48 in its simplest form. =
  5. 5.What is the HCF of 18 and 45?
  6. 6.Write 16/72 in its simplest form. =
  7. 7.Write 15/35 in its simplest form. =
  8. 8.Is 5/50 in its simplest form? (a) No (b) Yes
  9. 9.Is 3/8 in its simplest form? (a) No (b) Yes
  10. 10.Is 1/6 in its simplest form? (a) No (b) Yes
  11. 11.Is 9/21 in its simplest form? (a) Yes (b) No
  12. 12.Is 3/5 in its simplest form? (a) No (b) Yes
  13. 13.What is the HCF of 10 and 12?
  14. 14.Write 35/40 in its simplest form. =
  15. 15.Is 5/35 in its simplest form? (a) No (b) Yes
  16. 16.Write 18/42 in its simplest form. =
  17. 17.Is 4/9 in its simplest form? (a) No (b) Yes
  18. 18.What is the HCF of 9 and 36?
  19. 19.What is the HCF of 20 and 24?
  20. 20.Is 2/9 in its simplest form? (a) No (b) Yes
  21. 21.Is 6/7 in its simplest form? (a) No (b) Yes
  22. 22.What is the HCF of 4 and 18?
  23. 23.What is the HCF of 21 and 28?
  24. 24.Write 56/72 in its simplest form. =
  25. 25.Is 5/8 in its simplest form? (a) Yes (b) No
  26. 26.What is the HCF of 24 and 80?
  27. 27.Write 16/20 in its simplest form. =
  28. 28.What is the HCF of 30 and 35?
  29. 29.Is 1/4 in its simplest form? (a) No (b) Yes
  30. 30.Write 8/56 in its simplest form. =
  31. 31.Write 6/15 in its simplest form. =
  32. 32.Is 1/8 in its simplest form? (a) Yes (b) No
  33. 33.Write 6/12 in its simplest form. =
  34. 34.Is 3/7 in its simplest form? (a) No (b) Yes
  35. 35.What is the HCF of 9 and 54?
  36. 36.Write 5/30 in its simplest form. =
  37. 37.Is 4/40 in its simplest form? (a) No (b) Yes
  38. 38.Write 4/40 in its simplest form. =
  39. 39.Write 14/21 in its simplest form. =
  40. 40.Is 2/10 in its simplest form? (a) No (b) Yes

Answer key

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

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