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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 505 · 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 5/8 in its simplest form? (a) No (b) Yes
  2. 2.Write 72/81 in its simplest form. =
  3. 3.What is the HCF of 15 and 40?
  4. 4.What is the HCF of 14 and 20?
  5. 5.Write 25/40 in its simplest form. =
  6. 6.Is 15/25 in its simplest form? (a) No (b) Yes
  7. 7.Write 6/30 in its simplest form. =
  8. 8.Write 15/50 in its simplest form. =
  9. 9.What is the HCF of 3 and 27?
  10. 10.Is 2/5 in its simplest form? (a) No (b) Yes
  11. 11.Is 12/30 in its simplest form? (a) No (b) Yes
  12. 12.Write 36/63 in its simplest form. =
  13. 13.What is the HCF of 32 and 36?
  14. 14.Write 7/35 in its simplest form. =
  15. 15.What is the HCF of 6 and 15?
  16. 16.Write 42/60 in its simplest form. =
  17. 17.Write 10/14 in its simplest form. =
  18. 18.Is 7/10 in its simplest form? (a) Yes (b) No
  19. 19.Write 45/54 in its simplest form. =
  20. 20.Is 10/35 in its simplest form? (a) No (b) Yes
  21. 21.Write 24/64 in its simplest form. =
  22. 22.Is 15/50 in its simplest form? (a) No (b) Yes
  23. 23.What is the HCF of 9 and 21?
  24. 24.Is 1/4 in its simplest form? (a) No (b) Yes
  25. 25.Write 15/35 in its simplest form. =
  26. 26.Is 24/27 in its simplest form? (a) No (b) Yes
  27. 27.Write 14/20 in its simplest form. =
  28. 28.What is the HCF of 64 and 72?
  29. 29.Is 1/5 in its simplest form? (a) Yes (b) No
  30. 30.Write 7/42 in its simplest form. =
  31. 31.Write 21/30 in its simplest form. =
  32. 32.What is the HCF of 63 and 90?
  33. 33.Is 1/9 in its simplest form? (a) No (b) Yes
  34. 34.Is 5/6 in its simplest form? (a) No (b) Yes
  35. 35.Is 12/15 in its simplest form? (a) Yes (b) No
  36. 36.What is the HCF of 21 and 70?
  37. 37.What is the HCF of 7 and 21?
  38. 38.What is the HCF of 5 and 35?
  39. 39.Write 28/49 in its simplest form. =
  40. 40.What is the HCF of 21 and 28?

Answer key

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

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