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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 913 · 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 35 and 40?
  2. 2.What is the HCF of 14 and 35?
  3. 3.Is 1/5 in its simplest form? (a) Yes (b) No
  4. 4.What is the HCF of 3 and 30?
  5. 5.Is 1/9 in its simplest form? (a) No (b) Yes
  6. 6.Is 3/18 in its simplest form? (a) No (b) Yes
  7. 7.Write 54/60 in its simplest form. =
  8. 8.Write 8/16 in its simplest form. =
  9. 9.Write 3/24 in its simplest form. =
  10. 10.What is the HCF of 36 and 45?
  11. 11.Write 32/40 in its simplest form. =
  12. 12.What is the HCF of 40 and 72?
  13. 13.Write 14/49 in its simplest form. =
  14. 14.What is the HCF of 3 and 24?
  15. 15.Is 20/25 in its simplest form? (a) Yes (b) No
  16. 16.Write 27/30 in its simplest form. =
  17. 17.Write 10/45 in its simplest form. =
  18. 18.What is the HCF of 5 and 10?
  19. 19.Is 54/60 in its simplest form? (a) No (b) Yes
  20. 20.Write 4/32 in its simplest form. =
  21. 21.What is the HCF of 3 and 15?
  22. 22.What is the HCF of 27 and 45?
  23. 23.Is 1/7 in its simplest form? (a) No (b) Yes
  24. 24.Is 18/24 in its simplest form? (a) Yes (b) No
  25. 25.What is the HCF of 63 and 81?
  26. 26.What is the HCF of 18 and 42?
  27. 27.Is 12/16 in its simplest form? (a) Yes (b) No
  28. 28.Is 4/7 in its simplest form? (a) No (b) Yes
  29. 29.Is 3/5 in its simplest form? (a) No (b) Yes
  30. 30.Is 3/8 in its simplest form? (a) Yes (b) No
  31. 31.Write 27/63 in its simplest form. =
  32. 32.What is the HCF of 32 and 56?
  33. 33.Write 6/8 in its simplest form. =
  34. 34.Write 12/40 in its simplest form. =
  35. 35.Is 32/36 in its simplest form? (a) Yes (b) No
  36. 36.What is the HCF of 18 and 81?
  37. 37.Write 6/24 in its simplest form. =
  38. 38.Is 12/32 in its simplest form? (a) Yes (b) No
  39. 39.Write 15/21 in its simplest form. =
  40. 40.Is 20/28 in its simplest form? (a) No (b) Yes

Answer key

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

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