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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 130 · 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 14 and 63?
  2. 2.Write 27/63 in its simplest form. =
  3. 3.Write 9/90 in its simplest form. =
  4. 4.What is the HCF of 40 and 45?
  5. 5.What is the HCF of 56 and 64?
  6. 6.Write 10/35 in its simplest form. =
  7. 7.Is 1/9 in its simplest form? (a) Yes (b) No
  8. 8.Write 10/16 in its simplest form. =
  9. 9.Write 12/27 in its simplest form. =
  10. 10.Write 14/21 in its simplest form. =
  11. 11.Is 4/28 in its simplest form? (a) Yes (b) No
  12. 12.What is the HCF of 42 and 54?
  13. 13.Write 8/56 in its simplest form. =
  14. 14.Write 2/6 in its simplest form. =
  15. 15.Is 10/14 in its simplest form? (a) Yes (b) No
  16. 16.What is the HCF of 6 and 36?
  17. 17.What is the HCF of 4 and 14?
  18. 18.Is 1/4 in its simplest form? (a) Yes (b) No
  19. 19.What is the HCF of 16 and 18?
  20. 20.Is 2/3 in its simplest form? (a) No (b) Yes
  21. 21.Is 30/36 in its simplest form? (a) Yes (b) No
  22. 22.Is 3/8 in its simplest form? (a) Yes (b) No
  23. 23.Is 6/24 in its simplest form? (a) No (b) Yes
  24. 24.Write 12/21 in its simplest form. =
  25. 25.Write 4/6 in its simplest form. =
  26. 26.Write 35/45 in its simplest form. =
  27. 27.What is the HCF of 81 and 90?
  28. 28.What is the HCF of 6 and 16?
  29. 29.Is 18/60 in its simplest form? (a) No (b) Yes
  30. 30.Is 4/5 in its simplest form? (a) No (b) Yes
  31. 31.Is 3/4 in its simplest form? (a) Yes (b) No
  32. 32.Write 3/9 in its simplest form. =
  33. 33.What is the HCF of 5 and 45?
  34. 34.What is the HCF of 35 and 63?
  35. 35.Is 21/27 in its simplest form? (a) Yes (b) No
  36. 36.What is the HCF of 45 and 72?
  37. 37.Is 15/18 in its simplest form? (a) Yes (b) No
  38. 38.Write 8/40 in its simplest form. =
  39. 39.Write 9/21 in its simplest form. =
  40. 40.Write 7/42 in its simplest form. =

Answer key

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

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