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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 493 · 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 7/70 in its simplest form. =
  2. 2.What is the HCF of 28 and 40?
  3. 3.Is 2/20 in its simplest form? (a) Yes (b) No
  4. 4.Is 14/16 in its simplest form? (a) Yes (b) No
  5. 5.Is 7/8 in its simplest form? (a) No (b) Yes
  6. 6.Write 3/30 in its simplest form. =
  7. 7.Is 7/9 in its simplest form? (a) No (b) Yes
  8. 8.Write 8/12 in its simplest form. =
  9. 9.Write 24/64 in its simplest form. =
  10. 10.Is 2/9 in its simplest form? (a) No (b) Yes
  11. 11.Is 18/21 in its simplest form? (a) No (b) Yes
  12. 12.What is the HCF of 45 and 54?
  13. 13.Is 10/45 in its simplest form? (a) No (b) Yes
  14. 14.What is the HCF of 27 and 36?
  15. 15.Write 12/27 in its simplest form. =
  16. 16.What is the HCF of 5 and 40?
  17. 17.What is the HCF of 40 and 72?
  18. 18.What is the HCF of 64 and 72?
  19. 19.Write 18/21 in its simplest form. =
  20. 20.Is 42/60 in its simplest form? (a) Yes (b) No
  21. 21.Is 1/3 in its simplest form? (a) Yes (b) No
  22. 22.Is 5/9 in its simplest form? (a) Yes (b) No
  23. 23.What is the HCF of 6 and 48?
  24. 24.What is the HCF of 14 and 63?
  25. 25.What is the HCF of 6 and 54?
  26. 26.Write 9/24 in its simplest form. =
  27. 27.Write 40/45 in its simplest form. =
  28. 28.Write 6/24 in its simplest form. =
  29. 29.What is the HCF of 18 and 42?
  30. 30.What is the HCF of 6 and 42?
  31. 31.Write 12/42 in its simplest form. =
  32. 32.Write 24/56 in its simplest form. =
  33. 33.What is the HCF of 24 and 32?
  34. 34.Write 9/27 in its simplest form. =
  35. 35.What is the HCF of 3 and 15?
  36. 36.Is 4/7 in its simplest form? (a) No (b) Yes
  37. 37.Write 49/56 in its simplest form. =
  38. 38.Is 1/6 in its simplest form? (a) No (b) Yes
  39. 39.Is 25/45 in its simplest form? (a) No (b) Yes
  40. 40.Write 15/40 in its simplest form. =

Answer key

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

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