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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 871 · 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 4/9 litre of juice. Vihaan drinks 1/3 litre. How much juice is left (in litres)? =
  2. 2.Vihaan has a ribbon 2/3 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  3. 3.A tank is 1/2 full of water. Then water filling 2/7 of the tank is used. What fraction of the tank is full now? =
  4. 4.1/3 − 1/8 =
  5. 5.3/4 − 1/5 =
  6. 6.1/2 − 2/9 =
  7. 7.5/8 − 1/4 =
  8. 8.4/9 − 1/6 =
  9. 9.A tank is 7/8 full of water. Then water filling 3/4 of the tank is used. What fraction of the tank is full now? =
  10. 10.A bottle has 7/8 litre of juice. Rohan drinks 1/6 litre. How much juice is left (in litres)? =
  11. 11.A tank is 1/2 full of water. Then water filling 1/7 of the tank is used. What fraction of the tank is full now? =
  12. 12.A tank is 3/8 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  13. 13.A tank is 1/3 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  14. 14.8/9 − 1/3 =
  15. 15.5/6 − 3/5 =
  16. 16.A tank is 8/9 full of water. Then water filling 5/6 of the tank is used. What fraction of the tank is full now? =
  17. 17.1/2 − 1/9 =
  18. 18.Arjun has a ribbon 1/4 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  19. 19.5/8 − 1/6 =
  20. 20.A tank is 4/5 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  21. 21.7/8 − 1/3 =
  22. 22.A bottle has 1/3 litre of juice. Rohan drinks 1/10 litre. How much juice is left (in litres)? =
  23. 23.4/5 − 1/2 =
  24. 24.1/4 − 1/6 =
  25. 25.1/3 − 2/7 =
  26. 26.Anaya has a ribbon 5/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  27. 27.A tank is 7/9 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  28. 28.4/7 − 1/3 =
  29. 29.5/7 − 1/3 =
  30. 30.A tank is 7/8 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  31. 31.Meera has a ribbon 1/4 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  32. 32.2/3 − 5/9 =
  33. 33.A tank is 3/7 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  34. 34.5/9 − 1/6 =
  35. 35.A tank is 5/7 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 5/6 full of water. Then water filling 2/5 of the tank is used. What fraction of the tank is full now? =
  37. 37.3/4 − 3/8 =
  38. 38.Meera has a ribbon 4/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  39. 39.5/6 − 1/2 =
  40. 40.Ishaan has a ribbon 8/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =

Answer key

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

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