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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 46 · 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 28/40 in its simplest form. =
  2. 2.Write 32/40 in its simplest form. =
  3. 3.What is the HCF of 10 and 35?
  4. 4.Is 6/20 in its simplest form? (a) Yes (b) No
  5. 5.What is the HCF of 5 and 10?
  6. 6.Is 36/40 in its simplest form? (a) No (b) Yes
  7. 7.Is 25/35 in its simplest form? (a) No (b) Yes
  8. 8.Is 7/9 in its simplest form? (a) Yes (b) No
  9. 9.What is the HCF of 36 and 45?
  10. 10.What is the HCF of 9 and 24?
  11. 11.Write 9/90 in its simplest form. =
  12. 12.What is the HCF of 8 and 48?
  13. 13.Write 6/60 in its simplest form. =
  14. 14.What is the HCF of 16 and 40?
  15. 15.Write 24/54 in its simplest form. =
  16. 16.Is 15/18 in its simplest form? (a) No (b) Yes
  17. 17.Is 6/60 in its simplest form? (a) Yes (b) No
  18. 18.Is 20/32 in its simplest form? (a) Yes (b) No
  19. 19.Write 8/80 in its simplest form. =
  20. 20.Write 8/64 in its simplest form. =
  21. 21.Is 28/32 in its simplest form? (a) No (b) Yes
  22. 22.What is the HCF of 4 and 8?
  23. 23.Is 1/4 in its simplest form? (a) No (b) Yes
  24. 24.Write 6/12 in its simplest form. =
  25. 25.Is 6/8 in its simplest form? (a) Yes (b) No
  26. 26.What is the HCF of 5 and 45?
  27. 27.Is 1/6 in its simplest form? (a) No (b) Yes
  28. 28.Write 24/30 in its simplest form. =
  29. 29.Is 14/18 in its simplest form? (a) Yes (b) No
  30. 30.What is the HCF of 2 and 6?
  31. 31.What is the HCF of 9 and 15?
  32. 32.Is 6/18 in its simplest form? (a) Yes (b) No
  33. 33.Write 9/27 in its simplest form. =
  34. 34.Is 15/20 in its simplest form? (a) No (b) Yes
  35. 35.Write 6/24 in its simplest form. =
  36. 36.What is the HCF of 7 and 49?
  37. 37.Is 12/20 in its simplest form? (a) Yes (b) No
  38. 38.What is the HCF of 18 and 21?
  39. 39.Write 6/16 in its simplest form. =
  40. 40.Is 12/40 in its simplest form? (a) No (b) Yes

Answer key

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

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