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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 225 · 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 20 and 24?
  2. 2.What is the HCF of 7 and 42?
  3. 3.What is the HCF of 14 and 63?
  4. 4.Is 10/35 in its simplest form? (a) No (b) Yes
  5. 5.Write 12/16 in its simplest form. =
  6. 6.Write 42/49 in its simplest form. =
  7. 7.Is 3/18 in its simplest form? (a) Yes (b) No
  8. 8.What is the HCF of 7 and 21?
  9. 9.What is the HCF of 63 and 90?
  10. 10.Write 12/20 in its simplest form. =
  11. 11.Write 4/28 in its simplest form. =
  12. 12.Write 48/54 in its simplest form. =
  13. 13.Is 2/5 in its simplest form? (a) No (b) Yes
  14. 14.What is the HCF of 21 and 35?
  15. 15.What is the HCF of 54 and 60?
  16. 16.Write 12/28 in its simplest form. =
  17. 17.Write 8/32 in its simplest form. =
  18. 18.Write 36/63 in its simplest form. =
  19. 19.What is the HCF of 21 and 56?
  20. 20.Write 12/21 in its simplest form. =
  21. 21.What is the HCF of 12 and 28?
  22. 22.Is 3/12 in its simplest form? (a) No (b) Yes
  23. 23.What is the HCF of 20 and 45?
  24. 24.Is 5/40 in its simplest form? (a) Yes (b) No
  25. 25.Is 4/10 in its simplest form? (a) No (b) Yes
  26. 26.Is 5/8 in its simplest form? (a) No (b) Yes
  27. 27.What is the HCF of 7 and 70?
  28. 28.Is 28/40 in its simplest form? (a) Yes (b) No
  29. 29.Is 5/30 in its simplest form? (a) Yes (b) No
  30. 30.Write 15/27 in its simplest form. =
  31. 31.Write 4/32 in its simplest form. =
  32. 32.Is 24/28 in its simplest form? (a) No (b) Yes
  33. 33.Is 35/40 in its simplest form? (a) No (b) Yes
  34. 34.Is 10/25 in its simplest form? (a) No (b) Yes
  35. 35.What is the HCF of 49 and 70?
  36. 36.What is the HCF of 40 and 64?
  37. 37.Write 10/25 in its simplest form. =
  38. 38.What is the HCF of 5 and 35?
  39. 39.What is the HCF of 10 and 18?
  40. 40.What is the HCF of 3 and 21?

Answer key

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

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