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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 524 · 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 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? =
  2. 2.1/3 − 2/9 =
  3. 3.2/3 − 1/10 =
  4. 4.Sara has a ribbon 7/8 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  5. 5.A bottle has 1/2 litre of juice. Aarav drinks 2/7 litre. How much juice is left (in litres)? =
  6. 6.7/9 − 1/3 =
  7. 7.Tara has a ribbon 1/4 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  8. 8.Meera has a ribbon 8/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  9. 9.Diya has a ribbon 9/10 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  10. 10.2/3 − 4/9 =
  11. 11.Aarav has a ribbon 5/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  12. 12.A tank is 2/3 full of water. Then water filling 1/9 of the tank is used. What fraction of the tank is full now? =
  13. 13.3/4 − 3/10 =
  14. 14.A tank is 2/3 full of water. Then water filling 2/7 of the tank is used. What fraction of the tank is full now? =
  15. 15.Arjun has a ribbon 5/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  16. 16.A tank is 1/4 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  17. 17.2/3 − 1/7 =
  18. 18.A tank is 5/6 full of water. Then water filling 4/9 of the tank is used. What fraction of the tank is full now? =
  19. 19.A tank is 7/8 full of water. Then water filling 5/6 of the tank is used. What fraction of the tank is full now? =
  20. 20.1/2 − 2/7 =
  21. 21.9/10 − 3/4 =
  22. 22.A tank is 9/10 full of water. Then water filling 5/6 of the tank is used. What fraction of the tank is full now? =
  23. 23.A bottle has 2/3 litre of juice. Arjun drinks 2/7 litre. How much juice is left (in litres)? =
  24. 24.A bottle has 6/7 litre of juice. Ishaan drinks 1/2 litre. How much juice is left (in litres)? =
  25. 25.Vihaan has a ribbon 8/9 m long and cuts off 5/6 m. How long is the ribbon now (in m)? =
  26. 26.1/2 − 1/9 =
  27. 27.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? =
  28. 28.A bottle has 4/9 litre of juice. Diya drinks 1/6 litre. How much juice is left (in litres)? =
  29. 29.5/9 − 1/6 =
  30. 30.5/6 − 1/5 =
  31. 31.5/8 − 1/6 =
  32. 32.A tank is 5/8 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  33. 33.1/5 − 1/6 =
  34. 34.3/7 − 1/3 =
  35. 35.3/8 − 1/4 =
  36. 36.5/7 − 1/3 =
  37. 37.5/9 − 1/2 =
  38. 38.Aarav has a ribbon 1/3 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  39. 39.A tank is 2/3 full of water. Then water filling 2/9 of the tank is used. What fraction of the tank is full now? =
  40. 40.Riya has a ribbon 1/2 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =

Answer key

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

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