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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 243 · 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 7 and 63?
  2. 2.Is 5/8 in its simplest form? (a) No (b) Yes
  3. 3.Write 20/36 in its simplest form. =
  4. 4.What is the HCF of 9 and 15?
  5. 5.Is 5/10 in its simplest form? (a) Yes (b) No
  6. 6.Is 5/6 in its simplest form? (a) Yes (b) No
  7. 7.Write 20/25 in its simplest form. =
  8. 8.Is 15/50 in its simplest form? (a) Yes (b) No
  9. 9.What is the HCF of 15 and 27?
  10. 10.Write 72/80 in its simplest form. =
  11. 11.What is the HCF of 7 and 49?
  12. 12.What is the HCF of 9 and 81?
  13. 13.Write 15/21 in its simplest form. =
  14. 14.Write 7/63 in its simplest form. =
  15. 15.What is the HCF of 9 and 18?
  16. 16.Is 2/7 in its simplest form? (a) Yes (b) No
  17. 17.Is 2/9 in its simplest form? (a) Yes (b) No
  18. 18.Write 48/54 in its simplest form. =
  19. 19.Write 4/18 in its simplest form. =
  20. 20.Write 21/56 in its simplest form. =
  21. 21.Is 3/8 in its simplest form? (a) Yes (b) No
  22. 22.What is the HCF of 9 and 27?
  23. 23.Write 24/27 in its simplest form. =
  24. 24.Write 6/14 in its simplest form. =
  25. 25.Is 6/18 in its simplest form? (a) Yes (b) No
  26. 26.Is 10/15 in its simplest form? (a) No (b) Yes
  27. 27.Write 16/36 in its simplest form. =
  28. 28.Write 63/70 in its simplest form. =
  29. 29.What is the HCF of 10 and 25?
  30. 30.Is 30/54 in its simplest form? (a) No (b) Yes
  31. 31.What is the HCF of 24 and 54?
  32. 32.Write 6/20 in its simplest form. =
  33. 33.Write 24/30 in its simplest form. =
  34. 34.What is the HCF of 9 and 24?
  35. 35.Is 1/10 in its simplest form? (a) No (b) Yes
  36. 36.Is 2/5 in its simplest form? (a) No (b) Yes
  37. 37.Is 21/24 in its simplest form? (a) No (b) Yes
  38. 38.Write 2/10 in its simplest form. =
  39. 39.Write 5/10 in its simplest form. =
  40. 40.Is 14/18 in its simplest form? (a) Yes (b) No

Answer key

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

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