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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 699 · 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 40/45 in its simplest form. =
  2. 2.Write 24/30 in its simplest form. =
  3. 3.Is 4/9 in its simplest form? (a) No (b) Yes
  4. 4.What is the HCF of 18 and 60?
  5. 5.Is 18/42 in its simplest form? (a) Yes (b) No
  6. 6.What is the HCF of 63 and 72?
  7. 7.What is the HCF of 16 and 20?
  8. 8.What is the HCF of 6 and 14?
  9. 9.Write 7/35 in its simplest form. =
  10. 10.Write 12/15 in its simplest form. =
  11. 11.Write 20/25 in its simplest form. =
  12. 12.What is the HCF of 12 and 18?
  13. 13.What is the HCF of 9 and 24?
  14. 14.Is 18/20 in its simplest form? (a) No (b) Yes
  15. 15.Write 20/24 in its simplest form. =
  16. 16.Write 20/45 in its simplest form. =
  17. 17.What is the HCF of 45 and 54?
  18. 18.Write 7/21 in its simplest form. =
  19. 19.Is 5/7 in its simplest form? (a) No (b) Yes
  20. 20.Write 5/45 in its simplest form. =
  21. 21.Is 1/6 in its simplest form? (a) Yes (b) No
  22. 22.Is 8/12 in its simplest form? (a) No (b) Yes
  23. 23.Write 14/35 in its simplest form. =
  24. 24.Write 8/18 in its simplest form. =
  25. 25.Write 8/12 in its simplest form. =
  26. 26.Is 42/60 in its simplest form? (a) Yes (b) No
  27. 27.Write 4/6 in its simplest form. =
  28. 28.Is 28/40 in its simplest form? (a) Yes (b) No
  29. 29.What is the HCF of 6 and 42?
  30. 30.Write 8/64 in its simplest form. =
  31. 31.What is the HCF of 14 and 21?
  32. 32.What is the HCF of 2 and 6?
  33. 33.Write 35/63 in its simplest form. =
  34. 34.What is the HCF of 28 and 36?
  35. 35.Write 8/40 in its simplest form. =
  36. 36.Is 6/7 in its simplest form? (a) Yes (b) No
  37. 37.Write 27/30 in its simplest form. =
  38. 38.Is 6/21 in its simplest form? (a) Yes (b) No
  39. 39.What is the HCF of 18 and 48?
  40. 40.What is the HCF of 4 and 16?

Answer key

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

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