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Adding Fractions with Different Denominators Worksheet

Fractions lesson 15: Adding fractions: different denominators · Set 43 · 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. 1.1/2 + 7/10 =
  2. 2.A recipe needs 5/6 kg of flour and 8/9 kg of sugar. How much is that in all (in kg)? =
  3. 3.7/9 + 1/3 =
  4. 4.5/8 + 1/6 =
  5. 5.4/7 + 1/2 =
  6. 6.A recipe needs 1/3 kg of flour and 1/4 kg of sugar. How much is that in all (in kg)? =
  7. 7.4/7 + 1/3 =
  8. 8.1/4 + 3/10 =
  9. 9.Arjun walks 3/10 km to the park and then 1/6 km to the shop. How far does Arjun walk in all (in km)? =
  10. 10.1/3 + 9/10 =
  11. 11.7/10 + 2/3 =
  12. 12.1/3 + 2/5 =
  13. 13.A jug has 9/10 litre of milk. Tara pours in 1/2 litre more. How much milk is in the jug now (in litres)? =
  14. 14.A jug has 1/6 litre of milk. Riya pours in 3/5 litre more. How much milk is in the jug now (in litres)? =
  15. 15.4/5 + 2/3 =
  16. 16.1/6 + 3/5 =
  17. 17.4/9 + 1/3 =
  18. 18.1/10 + 1/6 =
  19. 19.2/7 + 1/4 =
  20. 20.2/9 + 1/6 =
  21. 21.3/8 + 1/4 =
  22. 22.A recipe needs 8/9 kg of flour and 1/2 kg of sugar. How much is that in all (in kg)? =
  23. 23.2/3 + 2/9 =
  24. 24.2/3 + 1/9 =
  25. 25.9/10 + 2/3 =
  26. 26.1/9 + 1/3 =
  27. 27.Diya walks 2/9 km to the park and then 1/2 km to the shop. How far does Diya walk in all (in km)? =
  28. 28.Vihaan walks 1/2 km to the park and then 5/9 km to the shop. How far does Vihaan walk in all (in km)? =
  29. 29.A recipe needs 3/10 kg of flour and 3/5 kg of sugar. How much is that in all (in kg)? =
  30. 30.Diya walks 2/3 km to the park and then 1/6 km to the shop. How far does Diya walk in all (in km)? =
  31. 31.1/4 + 2/3 =
  32. 32.5/8 + 5/6 =
  33. 33.Vihaan walks 1/9 km to the park and then 1/3 km to the shop. How far does Vihaan walk in all (in km)? =
  34. 34.3/7 + 3/4 =
  35. 35.3/5 + 1/4 =
  36. 36.A jug has 3/10 litre of milk. Meera pours in 1/6 litre more. How much milk is in the jug now (in litres)? =
  37. 37.1/3 + 1/6 =
  38. 38.A recipe needs 1/3 kg of flour and 1/8 kg of sugar. How much is that in all (in kg)? =
  39. 39.1/4 + 9/10 =
  40. 40.3/4 + 3/10 =

Answer key

  1. 6/5
  2. 31/18
  3. 10/9
  4. 19/24
  5. 15/14
  6. 7/12
  7. 19/21
  8. 11/20
  9. 7/15
  10. 37/30
  11. 41/30
  12. 11/15
  13. 7/5
  14. 23/30
  15. 22/15
  16. 23/30
  17. 7/9
  18. 4/15
  19. 15/28
  20. 7/18
  21. 5/8
  22. 25/18
  23. 8/9
  24. 7/9
  25. 47/30
  26. 4/9
  27. 13/18
  28. 19/18
  29. 9/10
  30. 5/6
  31. 11/12
  32. 35/24
  33. 4/9
  34. 33/28
  35. 17/20
  36. 7/15
  37. 1/2
  38. 11/24
  39. 23/20
  40. 21/20

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