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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 661 · 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 21/49 in its simplest form. =
  2. 2.Write 9/30 in its simplest form. =
  3. 3.Is 9/24 in its simplest form? (a) No (b) Yes
  4. 4.What is the HCF of 4 and 40?
  5. 5.Write 2/10 in its simplest form. =
  6. 6.What is the HCF of 9 and 90?
  7. 7.What is the HCF of 63 and 72?
  8. 8.What is the HCF of 10 and 14?
  9. 9.Write 63/81 in its simplest form. =
  10. 10.What is the HCF of 12 and 32?
  11. 11.Is 3/4 in its simplest form? (a) Yes (b) No
  12. 12.Write 8/64 in its simplest form. =
  13. 13.Write 35/49 in its simplest form. =
  14. 14.Write 2/14 in its simplest form. =
  15. 15.What is the HCF of 6 and 8?
  16. 16.Write 15/21 in its simplest form. =
  17. 17.Write 6/12 in its simplest form. =
  18. 18.What is the HCF of 8 and 16?
  19. 19.What is the HCF of 30 and 54?
  20. 20.Is 1/10 in its simplest form? (a) Yes (b) No
  21. 21.What is the HCF of 8 and 10?
  22. 22.What is the HCF of 6 and 27?
  23. 23.Is 6/42 in its simplest form? (a) No (b) Yes
  24. 24.Is 12/28 in its simplest form? (a) Yes (b) No
  25. 25.Write 16/24 in its simplest form. =
  26. 26.Is 3/9 in its simplest form? (a) No (b) Yes
  27. 27.Write 4/20 in its simplest form. =
  28. 28.Write 45/81 in its simplest form. =
  29. 29.What is the HCF of 2 and 18?
  30. 30.What is the HCF of 2 and 20?
  31. 31.What is the HCF of 56 and 72?
  32. 32.Write 49/70 in its simplest form. =
  33. 33.Write 14/63 in its simplest form. =
  34. 34.Write 20/45 in its simplest form. =
  35. 35.Write 36/63 in its simplest form. =
  36. 36.What is the HCF of 9 and 72?
  37. 37.Is 7/9 in its simplest form? (a) No (b) Yes
  38. 38.What is the HCF of 24 and 28?
  39. 39.Write 9/72 in its simplest form. =
  40. 40.Write 21/35 in its simplest form. =

Answer key

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

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