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Adding Fractions with Different Denominators Worksheet

Fractions lesson 15: Adding fractions: different denominators · Set 18 · 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. 1.3/4 + 7/8 =
  2. 2.1/8 + 1/4 =
  3. 3.7/10 + 3/5 =
  4. 4.A jug has 7/8 litre of milk. Meera pours in 1/3 litre more. How much milk is in the jug now (in litres)? =
  5. 5.1/9 + 5/6 =
  6. 6.9/10 + 2/5 =
  7. 7.7/8 + 2/3 =
  8. 8.A jug has 2/3 litre of milk. Meera pours in 2/5 litre more. How much milk is in the jug now (in litres)? =
  9. 9.Riya walks 2/7 km to the park and then 2/3 km to the shop. How far does Riya walk in all (in km)? =
  10. 10.2/3 + 1/10 =
  11. 11.Riya walks 3/10 km to the park and then 3/4 km to the shop. How far does Riya walk in all (in km)? =
  12. 12.3/8 + 1/2 =
  13. 13.5/9 + 2/3 =
  14. 14.A recipe needs 4/7 kg of flour and 1/4 kg of sugar. How much is that in all (in kg)? =
  15. 15.A jug has 3/8 litre of milk. Ishaan pours in 3/4 litre more. How much milk is in the jug now (in litres)? =
  16. 16.A recipe needs 3/8 kg of flour and 1/3 kg of sugar. How much is that in all (in kg)? =
  17. 17.1/9 + 1/3 =
  18. 18.A recipe needs 1/2 kg of flour and 1/3 kg of sugar. How much is that in all (in kg)? =
  19. 19.1/2 + 3/8 =
  20. 20.A recipe needs 2/5 kg of flour and 1/2 kg of sugar. How much is that in all (in kg)? =
  21. 21.A jug has 1/6 litre of milk. Tara pours in 7/9 litre more. How much milk is in the jug now (in litres)? =
  22. 22.1/2 + 2/9 =
  23. 23.Riya walks 5/7 km to the park and then 2/3 km to the shop. How far does Riya walk in all (in km)? =
  24. 24.Ishaan walks 3/7 km to the park and then 1/4 km to the shop. How far does Ishaan walk in all (in km)? =
  25. 25.2/5 + 1/2 =
  26. 26.A recipe needs 1/10 kg of flour and 1/3 kg of sugar. How much is that in all (in kg)? =
  27. 27.A jug has 1/10 litre of milk. Arjun pours in 1/4 litre more. How much milk is in the jug now (in litres)? =
  28. 28.1/5 + 1/10 =
  29. 29.4/7 + 1/4 =
  30. 30.2/3 + 8/9 =
  31. 31.6/7 + 3/4 =
  32. 32.A recipe needs 9/10 kg of flour and 2/5 kg of sugar. How much is that in all (in kg)? =
  33. 33.A recipe needs 7/10 kg of flour and 2/3 kg of sugar. How much is that in all (in kg)? =
  34. 34.Anaya walks 2/7 km to the park and then 1/2 km to the shop. How far does Anaya walk in all (in km)? =
  35. 35.9/10 + 1/2 =
  36. 36.3/10 + 2/5 =
  37. 37.9/10 + 5/6 =
  38. 38.3/5 + 3/10 =
  39. 39.Kabir walks 3/7 km to the park and then 1/2 km to the shop. How far does Kabir walk in all (in km)? =
  40. 40.2/3 + 7/10 =

Answer key

  1. 13/8
  2. 3/8
  3. 13/10
  4. 29/24
  5. 17/18
  6. 13/10
  7. 37/24
  8. 16/15
  9. 20/21
  10. 23/30
  11. 21/20
  12. 7/8
  13. 11/9
  14. 23/28
  15. 9/8
  16. 17/24
  17. 4/9
  18. 5/6
  19. 7/8
  20. 9/10
  21. 17/18
  22. 13/18
  23. 29/21
  24. 19/28
  25. 9/10
  26. 13/30
  27. 7/20
  28. 3/10
  29. 23/28
  30. 14/9
  31. 45/28
  32. 13/10
  33. 41/30
  34. 11/14
  35. 7/5
  36. 7/10
  37. 26/15
  38. 9/10
  39. 13/14
  40. 41/30

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