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Adding Fractions with Different Denominators Worksheet

Fractions lesson 15: Adding fractions: different denominators · Set 95 · 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. 1.3/5 + 2/3 =
  2. 2.5/8 + 3/4 =
  3. 3.A jug has 2/5 litre of milk. Aarav pours in 1/2 litre more. How much milk is in the jug now (in litres)? =
  4. 4.A jug has 7/9 litre of milk. Diya pours in 1/2 litre more. How much milk is in the jug now (in litres)? =
  5. 5.A jug has 1/8 litre of milk. Vihaan pours in 2/3 litre more. How much milk is in the jug now (in litres)? =
  6. 6.A recipe needs 5/7 kg of flour and 2/3 kg of sugar. How much is that in all (in kg)? =
  7. 7.A jug has 4/7 litre of milk. Kabir pours in 2/3 litre more. How much milk is in the jug now (in litres)? =
  8. 8.Aarav walks 5/9 km to the park and then 2/3 km to the shop. How far does Aarav walk in all (in km)? =
  9. 9.Arjun walks 1/5 km to the park and then 1/2 km to the shop. How far does Arjun walk in all (in km)? =
  10. 10.A jug has 1/5 litre of milk. Tara pours in 1/6 litre more. How much milk is in the jug now (in litres)? =
  11. 11.Rohan walks 1/8 km to the park and then 3/4 km to the shop. How far does Rohan walk in all (in km)? =
  12. 12.1/2 + 4/7 =
  13. 13.Tara walks 1/3 km to the park and then 1/10 km to the shop. How far does Tara walk in all (in km)? =
  14. 14.Aarav walks 1/8 km to the park and then 1/2 km to the shop. How far does Aarav walk in all (in km)? =
  15. 15.3/7 + 1/2 =
  16. 16.3/8 + 1/3 =
  17. 17.A jug has 2/7 litre of milk. Tara pours in 1/4 litre more. How much milk is in the jug now (in litres)? =
  18. 18.A recipe needs 2/3 kg of flour and 2/9 kg of sugar. How much is that in all (in kg)? =
  19. 19.A jug has 4/7 litre of milk. Arjun pours in 1/3 litre more. How much milk is in the jug now (in litres)? =
  20. 20.Sara walks 5/7 km to the park and then 3/4 km to the shop. How far does Sara walk in all (in km)? =
  21. 21.Aarav walks 1/9 km to the park and then 1/3 km to the shop. How far does Aarav walk in all (in km)? =
  22. 22.A recipe needs 2/7 kg of flour and 2/3 kg of sugar. How much is that in all (in kg)? =
  23. 23.Arjun walks 1/8 km to the park and then 1/4 km to the shop. How far does Arjun walk in all (in km)? =
  24. 24.A jug has 1/7 litre of milk. Aarav pours in 2/3 litre more. How much milk is in the jug now (in litres)? =
  25. 25.6/7 + 1/4 =
  26. 26.4/9 + 1/2 =
  27. 27.A recipe needs 1/2 kg of flour and 1/7 kg of sugar. How much is that in all (in kg)? =
  28. 28.A recipe needs 4/7 kg of flour and 3/4 kg of sugar. How much is that in all (in kg)? =
  29. 29.2/7 + 1/4 =
  30. 30.2/9 + 2/3 =
  31. 31.A recipe needs 1/5 kg of flour and 7/10 kg of sugar. How much is that in all (in kg)? =
  32. 32.A recipe needs 5/6 kg of flour and 3/10 kg of sugar. How much is that in all (in kg)? =
  33. 33.2/3 + 1/10 =
  34. 34.Kabir walks 2/3 km to the park and then 2/9 km to the shop. How far does Kabir walk in all (in km)? =
  35. 35.A jug has 1/10 litre of milk. Diya pours in 1/3 litre more. How much milk is in the jug now (in litres)? =
  36. 36.2/9 + 5/6 =
  37. 37.A recipe needs 1/8 kg of flour and 1/4 kg of sugar. How much is that in all (in kg)? =
  38. 38.4/9 + 5/6 =
  39. 39.2/3 + 1/7 =
  40. 40.Sara walks 5/6 km to the park and then 5/9 km to the shop. How far does Sara walk in all (in km)? =

Answer key

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

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