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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 170 · 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 42 and 49?
  2. 2.Is 2/7 in its simplest form? (a) No (b) Yes
  3. 3.Write 20/28 in its simplest form. =
  4. 4.Write 9/12 in its simplest form. =
  5. 5.What is the HCF of 49 and 63?
  6. 6.Is 1/8 in its simplest form? (a) Yes (b) No
  7. 7.Is 5/8 in its simplest form? (a) No (b) Yes
  8. 8.Write 2/8 in its simplest form. =
  9. 9.Is 7/8 in its simplest form? (a) Yes (b) No
  10. 10.Write 27/45 in its simplest form. =
  11. 11.Is 12/14 in its simplest form? (a) No (b) Yes
  12. 12.What is the HCF of 42 and 48?
  13. 13.Is 9/21 in its simplest form? (a) No (b) Yes
  14. 14.Is 4/20 in its simplest form? (a) Yes (b) No
  15. 15.Is 10/35 in its simplest form? (a) Yes (b) No
  16. 16.Write 4/20 in its simplest form. =
  17. 17.What is the HCF of 21 and 49?
  18. 18.Write 12/14 in its simplest form. =
  19. 19.What is the HCF of 24 and 27?
  20. 20.Is 18/20 in its simplest form? (a) No (b) Yes
  21. 21.Is 3/9 in its simplest form? (a) No (b) Yes
  22. 22.Write 27/90 in its simplest form. =
  23. 23.Is 45/50 in its simplest form? (a) No (b) Yes
  24. 24.What is the HCF of 3 and 24?
  25. 25.What is the HCF of 14 and 63?
  26. 26.What is the HCF of 6 and 48?
  27. 27.Is 21/30 in its simplest form? (a) No (b) Yes
  28. 28.Is 1/9 in its simplest form? (a) No (b) Yes
  29. 29.Is 14/18 in its simplest form? (a) Yes (b) No
  30. 30.Is 5/20 in its simplest form? (a) No (b) Yes
  31. 31.What is the HCF of 8 and 80?
  32. 32.What is the HCF of 7 and 14?
  33. 33.Write 24/30 in its simplest form. =
  34. 34.Write 7/28 in its simplest form. =
  35. 35.Is 3/21 in its simplest form? (a) Yes (b) No
  36. 36.Write 40/64 in its simplest form. =
  37. 37.What is the HCF of 20 and 35?
  38. 38.What is the HCF of 2 and 18?
  39. 39.Write 48/54 in its simplest form. =
  40. 40.What is the HCF of 12 and 30?

Answer key

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

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