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Adding Fractions with Different Denominators Worksheet

Fractions lesson 15: Adding fractions: different denominators · Set 682 · 40 questions
TalentJR

The method (LCM first): Find the LCM of the two bottom numbers. Change each fraction to that bottom number (multiply its top and bottom by the same number). Add the tops, keep the bottom, and simplify.

NameDateTime takenScore ___ / 40
  1. 1.Ishaan walks 1/2 km to the park and then 1/3 km to the shop. How far does Ishaan walk in all (in km)? =
  2. 2.A recipe needs 2/3 kg of flour and 1/4 kg of sugar. How much is that in all (in kg)? =
  3. 3.3/10 + 4/5 =
  4. 4.3/4 + 1/8 =
  5. 5.4/9 + 1/2 =
  6. 6.Riya walks 4/5 km to the park and then 5/6 km to the shop. How far does Riya walk in all (in km)? =
  7. 7.1/2 + 3/8 =
  8. 8.3/8 + 1/3 =
  9. 9.3/8 + 1/4 =
  10. 10.1/7 + 3/4 =
  11. 11.Diya walks 5/8 km to the park and then 3/4 km to the shop. How far does Diya walk in all (in km)? =
  12. 12.Arjun walks 3/10 km to the park and then 2/3 km to the shop. How far does Arjun walk in all (in km)? =
  13. 13.Arjun walks 1/4 km to the park and then 1/5 km to the shop. How far does Arjun walk in all (in km)? =
  14. 14.A recipe needs 1/5 kg of flour and 2/3 kg of sugar. How much is that in all (in kg)? =
  15. 15.A recipe needs 1/2 kg of flour and 2/7 kg of sugar. How much is that in all (in kg)? =
  16. 16.3/7 + 1/2 =
  17. 17.7/10 + 2/3 =
  18. 18.3/7 + 3/4 =
  19. 19.6/7 + 1/4 =
  20. 20.7/10 + 1/2 =
  21. 21.A recipe needs 1/5 kg of flour and 9/10 kg of sugar. How much is that in all (in kg)? =
  22. 22.5/6 + 1/8 =
  23. 23.1/3 + 7/9 =
  24. 24.Riya walks 1/4 km to the park and then 3/10 km to the shop. How far does Riya walk in all (in km)? =
  25. 25.1/6 + 3/10 =
  26. 26.6/7 + 2/3 =
  27. 27.3/8 + 3/4 =
  28. 28.3/4 + 1/3 =
  29. 29.3/4 + 1/6 =
  30. 30.A recipe needs 6/7 kg of flour and 2/3 kg of sugar. How much is that in all (in kg)? =
  31. 31.5/9 + 2/3 =
  32. 32.Arjun walks 1/7 km to the park and then 1/2 km to the shop. How far does Arjun walk in all (in km)? =
  33. 33.7/9 + 1/2 =
  34. 34.1/3 + 5/6 =
  35. 35.2/5 + 2/3 =
  36. 36.A recipe needs 1/4 kg of flour and 3/8 kg of sugar. How much is that in all (in kg)? =
  37. 37.7/10 + 3/5 =
  38. 38.1/9 + 1/6 =
  39. 39.A recipe needs 3/5 kg of flour and 7/10 kg of sugar. How much is that in all (in kg)? =
  40. 40.Anaya walks 1/8 km to the park and then 1/6 km to the shop. How far does Anaya walk in all (in km)? =

Answer key

  1. 5/6
  2. 11/12
  3. 11/10
  4. 7/8
  5. 17/18
  6. 49/30
  7. 7/8
  8. 17/24
  9. 5/8
  10. 25/28
  11. 11/8
  12. 29/30
  13. 9/20
  14. 13/15
  15. 11/14
  16. 13/14
  17. 41/30
  18. 33/28
  19. 31/28
  20. 6/5
  21. 11/10
  22. 23/24
  23. 10/9
  24. 11/20
  25. 7/15
  26. 32/21
  27. 9/8
  28. 13/12
  29. 11/12
  30. 32/21
  31. 11/9
  32. 9/14
  33. 23/18
  34. 7/6
  35. 16/15
  36. 5/8
  37. 13/10
  38. 5/18
  39. 13/10
  40. 7/24

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