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Adding Fractions with Different Denominators Worksheet

Fractions lesson 15: Adding fractions: different denominators · Set 25 · 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. 1.7/10 + 1/6 =
  2. 2.1/9 + 1/6 =
  3. 3.1/3 + 7/10 =
  4. 4.4/7 + 2/3 =
  5. 5.7/8 + 1/4 =
  6. 6.A jug has 1/10 litre of milk. Arjun pours in 4/5 litre more. How much milk is in the jug now (in litres)? =
  7. 7.1/10 + 5/6 =
  8. 8.2/3 + 3/10 =
  9. 9.1/2 + 8/9 =
  10. 10.4/5 + 9/10 =
  11. 11.3/5 + 2/3 =
  12. 12.1/8 + 3/4 =
  13. 13.4/5 + 1/3 =
  14. 14.1/5 + 1/2 =
  15. 15.A jug has 4/5 litre of milk. Vihaan pours in 1/4 litre more. How much milk is in the jug now (in litres)? =
  16. 16.1/6 + 2/5 =
  17. 17.A jug has 1/4 litre of milk. Rohan pours in 1/6 litre more. How much milk is in the jug now (in litres)? =
  18. 18.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)? =
  19. 19.A recipe needs 1/6 kg of flour and 2/3 kg of sugar. How much is that in all (in kg)? =
  20. 20.3/8 + 2/3 =
  21. 21.5/9 + 5/6 =
  22. 22.1/6 + 2/3 =
  23. 23.3/7 + 3/4 =
  24. 24.1/6 + 1/9 =
  25. 25.A jug has 3/5 litre of milk. Diya pours in 3/4 litre more. How much milk is in the jug now (in litres)? =
  26. 26.8/9 + 1/2 =
  27. 27.5/8 + 3/4 =
  28. 28.5/6 + 1/8 =
  29. 29.7/10 + 3/4 =
  30. 30.1/7 + 1/3 =
  31. 31.Sara walks 3/4 km to the park and then 3/7 km to the shop. How far does Sara walk in all (in km)? =
  32. 32.A jug has 4/7 litre of milk. Sara pours in 1/2 litre more. How much milk is in the jug now (in litres)? =
  33. 33.3/5 + 1/10 =
  34. 34.Meera walks 1/5 km to the park and then 1/2 km to the shop. How far does Meera walk in all (in km)? =
  35. 35.A recipe needs 5/7 kg of flour and 3/4 kg of sugar. How much is that in all (in kg)? =
  36. 36.Diya walks 3/4 km to the park and then 5/6 km to the shop. How far does Diya walk in all (in km)? =
  37. 37.6/7 + 1/2 =
  38. 38.Riya walks 3/5 km to the park and then 1/4 km to the shop. How far does Riya walk in all (in km)? =
  39. 39.Diya walks 5/9 km to the park and then 1/3 km to the shop. How far does Diya walk in all (in km)? =
  40. 40.Meera walks 5/9 km to the park and then 2/3 km to the shop. How far does Meera walk in all (in km)? =

Answer key

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

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