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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 448 · 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 3 and 18?
  2. 2.Write 14/21 in its simplest form. =
  3. 3.Write 10/15 in its simplest form. =
  4. 4.Is 1/3 in its simplest form? (a) No (b) Yes
  5. 5.What is the HCF of 8 and 20?
  6. 6.Is 10/15 in its simplest form? (a) No (b) Yes
  7. 7.What is the HCF of 28 and 49?
  8. 8.Is 5/8 in its simplest form? (a) No (b) Yes
  9. 9.What is the HCF of 9 and 81?
  10. 10.Is 4/6 in its simplest form? (a) No (b) Yes
  11. 11.Write 49/63 in its simplest form. =
  12. 12.Write 32/56 in its simplest form. =
  13. 13.Is 6/16 in its simplest form? (a) No (b) Yes
  14. 14.Is 3/10 in its simplest form? (a) No (b) Yes
  15. 15.Write 15/40 in its simplest form. =
  16. 16.What is the HCF of 6 and 8?
  17. 17.Write 12/21 in its simplest form. =
  18. 18.Is 1/10 in its simplest form? (a) No (b) Yes
  19. 19.Write 12/18 in its simplest form. =
  20. 20.Write 20/32 in its simplest form. =
  21. 21.Is 6/54 in its simplest form? (a) No (b) Yes
  22. 22.What is the HCF of 6 and 9?
  23. 23.Write 9/81 in its simplest form. =
  24. 24.Write 8/80 in its simplest form. =
  25. 25.Write 10/12 in its simplest form. =
  26. 26.What is the HCF of 36 and 40?
  27. 27.Is 6/12 in its simplest form? (a) Yes (b) No
  28. 28.What is the HCF of 30 and 35?
  29. 29.What is the HCF of 35 and 40?
  30. 30.What is the HCF of 56 and 63?
  31. 31.Write 24/27 in its simplest form. =
  32. 32.Is 6/48 in its simplest form? (a) Yes (b) No
  33. 33.Write 27/90 in its simplest form. =
  34. 34.What is the HCF of 63 and 70?
  35. 35.Is 7/9 in its simplest form? (a) Yes (b) No
  36. 36.What is the HCF of 9 and 54?
  37. 37.What is the HCF of 81 and 90?
  38. 38.What is the HCF of 2 and 12?
  39. 39.What is the HCF of 6 and 21?
  40. 40.Is 21/30 in its simplest form? (a) No (b) Yes

Answer key

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

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