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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 644 · 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 3/21 in its simplest form. =
  2. 2.Is 1/4 in its simplest form? (a) No (b) Yes
  3. 3.What is the HCF of 15 and 27?
  4. 4.What is the HCF of 54 and 63?
  5. 5.Write 21/70 in its simplest form. =
  6. 6.Is 3/10 in its simplest form? (a) Yes (b) No
  7. 7.Is 30/36 in its simplest form? (a) Yes (b) No
  8. 8.What is the HCF of 6 and 15?
  9. 9.Write 16/40 in its simplest form. =
  10. 10.Write 30/42 in its simplest form. =
  11. 11.What is the HCF of 35 and 40?
  12. 12.What is the HCF of 56 and 63?
  13. 13.Is 5/6 in its simplest form? (a) No (b) Yes
  14. 14.Write 28/63 in its simplest form. =
  15. 15.Is 7/10 in its simplest form? (a) No (b) Yes
  16. 16.Write 12/28 in its simplest form. =
  17. 17.Is 9/21 in its simplest form? (a) Yes (b) No
  18. 18.Is 1/5 in its simplest form? (a) Yes (b) No
  19. 19.Write 42/49 in its simplest form. =
  20. 20.Write 9/36 in its simplest form. =
  21. 21.What is the HCF of 2 and 8?
  22. 22.What is the HCF of 14 and 18?
  23. 23.What is the HCF of 3 and 30?
  24. 24.Is 6/7 in its simplest form? (a) Yes (b) No
  25. 25.Write 14/21 in its simplest form. =
  26. 26.Is 2/18 in its simplest form? (a) Yes (b) No
  27. 27.What is the HCF of 10 and 25?
  28. 28.Is 2/14 in its simplest form? (a) No (b) Yes
  29. 29.Write 5/30 in its simplest form. =
  30. 30.Write 14/49 in its simplest form. =
  31. 31.Write 9/18 in its simplest form. =
  32. 32.Write 3/27 in its simplest form. =
  33. 33.Write 28/40 in its simplest form. =
  34. 34.What is the HCF of 36 and 40?
  35. 35.Is 5/7 in its simplest form? (a) Yes (b) No
  36. 36.What is the HCF of 5 and 20?
  37. 37.Write 4/28 in its simplest form. =
  38. 38.Is 2/4 in its simplest form? (a) No (b) Yes
  39. 39.What is the HCF of 27 and 72?
  40. 40.What is the HCF of 8 and 48?

Answer key

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

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