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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 43 · 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.Is 42/48 in its simplest form? (a) Yes (b) No
  2. 2.What is the HCF of 4 and 10?
  3. 3.Write 7/35 in its simplest form. =
  4. 4.What is the HCF of 42 and 54?
  5. 5.Write 16/20 in its simplest form. =
  6. 6.Is 2/16 in its simplest form? (a) No (b) Yes
  7. 7.What is the HCF of 10 and 16?
  8. 8.Write 9/63 in its simplest form. =
  9. 9.Write 3/15 in its simplest form. =
  10. 10.Is 15/27 in its simplest form? (a) Yes (b) No
  11. 11.Write 3/18 in its simplest form. =
  12. 12.What is the HCF of 5 and 50?
  13. 13.Write 5/25 in its simplest form. =
  14. 14.Write 6/18 in its simplest form. =
  15. 15.Write 36/42 in its simplest form. =
  16. 16.Is 5/6 in its simplest form? (a) No (b) Yes
  17. 17.Write 15/20 in its simplest form. =
  18. 18.What is the HCF of 35 and 50?
  19. 19.What is the HCF of 35 and 42?
  20. 20.What is the HCF of 6 and 21?
  21. 21.Is 3/4 in its simplest form? (a) No (b) Yes
  22. 22.Is 1/4 in its simplest form? (a) No (b) Yes
  23. 23.What is the HCF of 28 and 40?
  24. 24.Is 5/25 in its simplest form? (a) No (b) Yes
  25. 25.What is the HCF of 56 and 72?
  26. 26.What is the HCF of 18 and 63?
  27. 27.Is 2/3 in its simplest form? (a) No (b) Yes
  28. 28.Is 6/20 in its simplest form? (a) No (b) Yes
  29. 29.Is 4/5 in its simplest form? (a) Yes (b) No
  30. 30.Is 9/10 in its simplest form? (a) No (b) Yes
  31. 31.Is 1/3 in its simplest form? (a) No (b) Yes
  32. 32.Is 1/8 in its simplest form? (a) Yes (b) No
  33. 33.What is the HCF of 48 and 56?
  34. 34.Write 36/40 in its simplest form. =
  35. 35.Is 3/8 in its simplest form? (a) No (b) Yes
  36. 36.Write 30/54 in its simplest form. =
  37. 37.Write 14/21 in its simplest form. =
  38. 38.Write 27/72 in its simplest form. =
  39. 39.What is the HCF of 3 and 21?
  40. 40.What is the HCF of 3 and 18?

Answer key

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

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