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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 98 · 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 35 and 45?
  2. 2.What is the HCF of 3 and 15?
  3. 3.What is the HCF of 5 and 20?
  4. 4.Write 6/14 in its simplest form. =
  5. 5.Write 10/25 in its simplest form. =
  6. 6.What is the HCF of 12 and 21?
  7. 7.What is the HCF of 63 and 81?
  8. 8.Write 63/72 in its simplest form. =
  9. 9.What is the HCF of 32 and 36?
  10. 10.Write 32/36 in its simplest form. =
  11. 11.What is the HCF of 21 and 70?
  12. 12.What is the HCF of 20 and 24?
  13. 13.What is the HCF of 32 and 56?
  14. 14.Is 1/5 in its simplest form? (a) Yes (b) No
  15. 15.Is 5/45 in its simplest form? (a) No (b) Yes
  16. 16.What is the HCF of 7 and 42?
  17. 17.Is 30/42 in its simplest form? (a) No (b) Yes
  18. 18.What is the HCF of 35 and 63?
  19. 19.Write 36/63 in its simplest form. =
  20. 20.Is 1/7 in its simplest form? (a) Yes (b) No
  21. 21.Is 4/5 in its simplest form? (a) Yes (b) No
  22. 22.Write 12/18 in its simplest form. =
  23. 23.What is the HCF of 32 and 40?
  24. 24.Is 2/12 in its simplest form? (a) No (b) Yes
  25. 25.Write 28/36 in its simplest form. =
  26. 26.Write 9/54 in its simplest form. =
  27. 27.Is 1/6 in its simplest form? (a) Yes (b) No
  28. 28.Write 28/32 in its simplest form. =
  29. 29.Write 16/28 in its simplest form. =
  30. 30.What is the HCF of 27 and 30?
  31. 31.Is 8/36 in its simplest form? (a) Yes (b) No
  32. 32.Is 18/42 in its simplest form? (a) Yes (b) No
  33. 33.What is the HCF of 18 and 48?
  34. 34.Write 32/72 in its simplest form. =
  35. 35.Write 6/16 in its simplest form. =
  36. 36.Write 56/80 in its simplest form. =
  37. 37.What is the HCF of 18 and 20?
  38. 38.Write 27/30 in its simplest form. =
  39. 39.What is the HCF of 9 and 72?
  40. 40.Is 4/40 in its simplest form? (a) No (b) Yes

Answer key

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

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