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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 875 · 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.Is 21/24 in its simplest form? (a) No (b) Yes
  2. 2.Is 30/54 in its simplest form? (a) Yes (b) No
  3. 3.Write 4/14 in its simplest form. =
  4. 4.What is the HCF of 40 and 48?
  5. 5.Write 7/42 in its simplest form. =
  6. 6.What is the HCF of 9 and 15?
  7. 7.Write 20/25 in its simplest form. =
  8. 8.Write 2/12 in its simplest form. =
  9. 9.Is 2/3 in its simplest form? (a) No (b) Yes
  10. 10.Is 16/20 in its simplest form? (a) Yes (b) No
  11. 11.Write 14/63 in its simplest form. =
  12. 12.Is 12/30 in its simplest form? (a) Yes (b) No
  13. 13.Write 3/15 in its simplest form. =
  14. 14.Is 28/32 in its simplest form? (a) Yes (b) No
  15. 15.What is the HCF of 20 and 35?
  16. 16.What is the HCF of 4 and 12?
  17. 17.Is 10/35 in its simplest form? (a) No (b) Yes
  18. 18.Write 16/20 in its simplest form. =
  19. 19.Is 2/9 in its simplest form? (a) Yes (b) No
  20. 20.What is the HCF of 4 and 18?
  21. 21.What is the HCF of 8 and 72?
  22. 22.What is the HCF of 4 and 36?
  23. 23.Is 54/60 in its simplest form? (a) No (b) Yes
  24. 24.Write 9/63 in its simplest form. =
  25. 25.Write 8/80 in its simplest form. =
  26. 26.What is the HCF of 6 and 15?
  27. 27.Write 6/10 in its simplest form. =
  28. 28.Write 9/36 in its simplest form. =
  29. 29.Is 2/12 in its simplest form? (a) Yes (b) No
  30. 30.Is 3/21 in its simplest form? (a) No (b) Yes
  31. 31.Is 4/40 in its simplest form? (a) No (b) Yes
  32. 32.Is 15/24 in its simplest form? (a) Yes (b) No
  33. 33.Write 32/40 in its simplest form. =
  34. 34.Write 20/24 in its simplest form. =
  35. 35.Is 1/5 in its simplest form? (a) Yes (b) No
  36. 36.What is the HCF of 6 and 60?
  37. 37.What is the HCF of 6 and 18?
  38. 38.What is the HCF of 42 and 60?
  39. 39.Write 9/90 in its simplest form. =
  40. 40.Write 42/54 in its simplest form. =

Answer key

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

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