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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 80 · 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 35/45 in its simplest form? (a) No (b) Yes
  2. 2.What is the HCF of 6 and 27?
  3. 3.Is 42/54 in its simplest form? (a) No (b) Yes
  4. 4.Is 6/36 in its simplest form? (a) No (b) Yes
  5. 5.What is the HCF of 7 and 42?
  6. 6.Is 3/9 in its simplest form? (a) Yes (b) No
  7. 7.Is 1/5 in its simplest form? (a) Yes (b) No
  8. 8.Is 18/48 in its simplest form? (a) Yes (b) No
  9. 9.What is the HCF of 20 and 36?
  10. 10.What is the HCF of 21 and 27?
  11. 11.What is the HCF of 9 and 12?
  12. 12.What is the HCF of 14 and 35?
  13. 13.Write 4/14 in its simplest form. =
  14. 14.What is the HCF of 8 and 12?
  15. 15.What is the HCF of 32 and 72?
  16. 16.What is the HCF of 21 and 24?
  17. 17.Write 15/50 in its simplest form. =
  18. 18.Write 4/40 in its simplest form. =
  19. 19.Is 7/9 in its simplest form? (a) No (b) Yes
  20. 20.Write 21/24 in its simplest form. =
  21. 21.What is the HCF of 6 and 48?
  22. 22.Write 6/15 in its simplest form. =
  23. 23.Write 21/49 in its simplest form. =
  24. 24.What is the HCF of 15 and 20?
  25. 25.What is the HCF of 4 and 18?
  26. 26.Is 2/6 in its simplest form? (a) No (b) Yes
  27. 27.Is 3/8 in its simplest form? (a) Yes (b) No
  28. 28.What is the HCF of 14 and 16?
  29. 29.Write 25/40 in its simplest form. =
  30. 30.What is the HCF of 2 and 6?
  31. 31.Is 2/10 in its simplest form? (a) Yes (b) No
  32. 32.Is 15/35 in its simplest form? (a) No (b) Yes
  33. 33.Is 8/9 in its simplest form? (a) Yes (b) No
  34. 34.Is 25/40 in its simplest form? (a) Yes (b) No
  35. 35.Is 2/20 in its simplest form? (a) No (b) Yes
  36. 36.Is 15/25 in its simplest form? (a) Yes (b) No
  37. 37.What is the HCF of 49 and 70?
  38. 38.What is the HCF of 18 and 20?
  39. 39.Write 15/21 in its simplest form. =
  40. 40.What is the HCF of 5 and 20?

Answer key

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

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