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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 533 · 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 9/21 in its simplest form. =
  2. 2.Is 9/30 in its simplest form? (a) Yes (b) No
  3. 3.Write 5/20 in its simplest form. =
  4. 4.What is the HCF of 5 and 30?
  5. 5.Is 4/12 in its simplest form? (a) No (b) Yes
  6. 6.Write 6/15 in its simplest form. =
  7. 7.Write 4/32 in its simplest form. =
  8. 8.What is the HCF of 14 and 63?
  9. 9.Write 16/40 in its simplest form. =
  10. 10.Write 9/18 in its simplest form. =
  11. 11.What is the HCF of 56 and 63?
  12. 12.Write 9/15 in its simplest form. =
  13. 13.Is 3/27 in its simplest form? (a) No (b) Yes
  14. 14.Is 2/9 in its simplest form? (a) No (b) Yes
  15. 15.Write 15/25 in its simplest form. =
  16. 16.What is the HCF of 28 and 49?
  17. 17.Is 12/16 in its simplest form? (a) Yes (b) No
  18. 18.Is 5/6 in its simplest form? (a) No (b) Yes
  19. 19.What is the HCF of 24 and 28?
  20. 20.What is the HCF of 27 and 36?
  21. 21.What is the HCF of 7 and 21?
  22. 22.What is the HCF of 30 and 35?
  23. 23.What is the HCF of 8 and 72?
  24. 24.What is the HCF of 21 and 70?
  25. 25.Write 20/28 in its simplest form. =
  26. 26.Is 2/10 in its simplest form? (a) No (b) Yes
  27. 27.Write 20/45 in its simplest form. =
  28. 28.Is 5/8 in its simplest form? (a) No (b) Yes
  29. 29.Is 6/16 in its simplest form? (a) No (b) Yes
  30. 30.Write 4/40 in its simplest form. =
  31. 31.Is 1/6 in its simplest form? (a) Yes (b) No
  32. 32.What is the HCF of 3 and 12?
  33. 33.What is the HCF of 21 and 27?
  34. 34.Write 32/40 in its simplest form. =
  35. 35.What is the HCF of 9 and 54?
  36. 36.Write 6/30 in its simplest form. =
  37. 37.Write 8/24 in its simplest form. =
  38. 38.Write 18/27 in its simplest form. =
  39. 39.Is 1/5 in its simplest form? (a) Yes (b) No
  40. 40.What is the HCF of 6 and 18?

Answer key

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

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