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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 728 · 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 8 and 80?
  2. 2.What is the HCF of 30 and 42?
  3. 3.What is the HCF of 15 and 20?
  4. 4.Write 2/10 in its simplest form. =
  5. 5.Write 10/14 in its simplest form. =
  6. 6.Write 4/12 in its simplest form. =
  7. 7.Write 72/81 in its simplest form. =
  8. 8.Is 3/4 in its simplest form? (a) No (b) Yes
  9. 9.Is 1/2 in its simplest form? (a) No (b) Yes
  10. 10.What is the HCF of 8 and 40?
  11. 11.Is 16/28 in its simplest form? (a) No (b) Yes
  12. 12.Is 6/60 in its simplest form? (a) No (b) Yes
  13. 13.What is the HCF of 2 and 10?
  14. 14.What is the HCF of 4 and 12?
  15. 15.Is 7/8 in its simplest form? (a) Yes (b) No
  16. 16.Is 24/27 in its simplest form? (a) No (b) Yes
  17. 17.What is the HCF of 25 and 40?
  18. 18.Is 21/24 in its simplest form? (a) No (b) Yes
  19. 19.Write 16/20 in its simplest form. =
  20. 20.Write 49/63 in its simplest form. =
  21. 21.Write 9/72 in its simplest form. =
  22. 22.Is 4/7 in its simplest form? (a) No (b) Yes
  23. 23.Is 5/40 in its simplest form? (a) No (b) Yes
  24. 24.Write 9/24 in its simplest form. =
  25. 25.What is the HCF of 18 and 81?
  26. 26.Is 5/6 in its simplest form? (a) No (b) Yes
  27. 27.What is the HCF of 28 and 63?
  28. 28.Write 36/63 in its simplest form. =
  29. 29.Is 1/8 in its simplest form? (a) Yes (b) No
  30. 30.Is 6/10 in its simplest form? (a) Yes (b) No
  31. 31.Is 1/10 in its simplest form? (a) Yes (b) No
  32. 32.Write 4/28 in its simplest form. =
  33. 33.Is 30/42 in its simplest form? (a) No (b) Yes
  34. 34.Write 42/54 in its simplest form. =
  35. 35.What is the HCF of 4 and 28?
  36. 36.Write 40/45 in its simplest form. =
  37. 37.What is the HCF of 56 and 64?
  38. 38.Write 9/90 in its simplest form. =
  39. 39.Write 18/20 in its simplest form. =
  40. 40.Write 9/21 in its simplest form. =

Answer key

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

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