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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 172 · 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 32 and 40?
  2. 2.Write 5/45 in its simplest form. =
  3. 3.What is the HCF of 4 and 28?
  4. 4.What is the HCF of 18 and 27?
  5. 5.Is 8/20 in its simplest form? (a) No (b) Yes
  6. 6.Is 2/5 in its simplest form? (a) No (b) Yes
  7. 7.What is the HCF of 6 and 10?
  8. 8.Is 7/9 in its simplest form? (a) No (b) Yes
  9. 9.What is the HCF of 63 and 81?
  10. 10.Write 35/49 in its simplest form. =
  11. 11.What is the HCF of 42 and 54?
  12. 12.What is the HCF of 56 and 63?
  13. 13.Write 42/48 in its simplest form. =
  14. 14.What is the HCF of 16 and 24?
  15. 15.Is 4/7 in its simplest form? (a) No (b) Yes
  16. 16.What is the HCF of 2 and 8?
  17. 17.What is the HCF of 24 and 56?
  18. 18.Write 4/16 in its simplest form. =
  19. 19.What is the HCF of 3 and 18?
  20. 20.Is 3/18 in its simplest form? (a) No (b) Yes
  21. 21.Is 3/6 in its simplest form? (a) No (b) Yes
  22. 22.Is 20/28 in its simplest form? (a) Yes (b) No
  23. 23.Is 3/7 in its simplest form? (a) Yes (b) No
  24. 24.Write 12/18 in its simplest form. =
  25. 25.Is 4/5 in its simplest form? (a) Yes (b) No
  26. 26.What is the HCF of 12 and 18?
  27. 27.Is 5/10 in its simplest form? (a) No (b) Yes
  28. 28.What is the HCF of 8 and 24?
  29. 29.Write 15/27 in its simplest form. =
  30. 30.Is 24/30 in its simplest form? (a) No (b) Yes
  31. 31.What is the HCF of 10 and 16?
  32. 32.What is the HCF of 35 and 45?
  33. 33.Is 3/30 in its simplest form? (a) No (b) Yes
  34. 34.Is 10/14 in its simplest form? (a) No (b) Yes
  35. 35.Write 7/70 in its simplest form. =
  36. 36.What is the HCF of 10 and 14?
  37. 37.Write 8/48 in its simplest form. =
  38. 38.What is the HCF of 15 and 35?
  39. 39.What is the HCF of 28 and 32?
  40. 40.Is 6/20 in its simplest form? (a) Yes (b) No

Answer key

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

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