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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 848 · 40 questions
TalentJR

The method (LCM, then take away): Find the LCM of the two bottom numbers. Change each fraction to that bottom number. Subtract the tops, keep the bottom, and simplify.

NameDateTime takenScore ___ / 40
  1. 1.A bottle has 3/10 litre of juice. Sara drinks 1/6 litre. How much juice is left (in litres)? =
  2. 2.Rohan has a ribbon 2/3 m long and cuts off 2/9 m. How long is the ribbon now (in m)? =
  3. 3.Riya has a ribbon 6/7 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  4. 4.7/8 − 1/4 =
  5. 5.Kabir has a ribbon 3/4 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  6. 6.3/4 − 1/7 =
  7. 7.A tank is 3/4 full of water. Then water filling 1/7 of the tank is used. What fraction of the tank is full now? =
  8. 8.A tank is 3/4 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  9. 9.1/3 − 1/6 =
  10. 10.1/4 − 1/8 =
  11. 11.5/9 − 1/2 =
  12. 12.9/10 − 2/5 =
  13. 13.9/10 − 1/4 =
  14. 14.A bottle has 1/3 litre of juice. Rohan drinks 1/5 litre. How much juice is left (in litres)? =
  15. 15.8/9 − 1/2 =
  16. 16.3/4 − 1/5 =
  17. 17.Rohan has a ribbon 1/2 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  18. 18.A tank is 2/3 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  19. 19.A bottle has 1/2 litre of juice. Vihaan drinks 1/8 litre. How much juice is left (in litres)? =
  20. 20.3/4 − 1/3 =
  21. 21.Sara has a ribbon 4/5 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  22. 22.5/9 − 1/3 =
  23. 23.3/5 − 1/4 =
  24. 24.A tank is 7/10 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  25. 25.Diya has a ribbon 3/4 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  26. 26.A bottle has 2/3 litre of juice. Arjun drinks 1/2 litre. How much juice is left (in litres)? =
  27. 27.A bottle has 3/10 litre of juice. Sara drinks 1/5 litre. How much juice is left (in litres)? =
  28. 28.A bottle has 3/4 litre of juice. Meera drinks 2/3 litre. How much juice is left (in litres)? =
  29. 29.Aarav has a ribbon 2/3 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  30. 30.1/3 − 1/9 =
  31. 31.1/4 − 1/7 =
  32. 32.4/5 − 1/3 =
  33. 33.A tank is 2/5 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  34. 34.1/6 − 1/9 =
  35. 35.A tank is 6/7 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  36. 36.A tank is 7/10 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  37. 37.A tank is 2/3 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  38. 38.9/10 − 4/5 =
  39. 39.1/2 − 2/5 =
  40. 40.A tank is 5/8 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =

Answer key

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

Free fractions lessons, practice and worksheets at talentjr.in/fractions-for-kids