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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 315 · 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 8/9 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  2. 2.1/2 − 1/5 =
  3. 3.5/6 − 5/9 =
  4. 4.7/9 − 1/3 =
  5. 5.A bottle has 7/9 litre of juice. Anaya drinks 1/3 litre. How much juice is left (in litres)? =
  6. 6.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? =
  7. 7.3/4 − 5/7 =
  8. 8.1/2 − 2/9 =
  9. 9.A bottle has 4/5 litre of juice. Sara drinks 1/4 litre. How much juice is left (in litres)? =
  10. 10.3/8 − 1/4 =
  11. 11.Arjun has a ribbon 7/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  12. 12.Diya has a ribbon 3/4 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  13. 13.Meera has a ribbon 8/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  14. 14.Kabir has a ribbon 1/2 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  15. 15.A bottle has 5/6 litre of juice. Aarav drinks 2/9 litre. How much juice is left (in litres)? =
  16. 16.A bottle has 3/8 litre of juice. Anaya drinks 1/6 litre. How much juice is left (in litres)? =
  17. 17.6/7 − 1/4 =
  18. 18.5/9 − 1/3 =
  19. 19.5/7 − 2/3 =
  20. 20.9/10 − 3/5 =
  21. 21.A tank is 9/10 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  22. 22.2/3 − 5/9 =
  23. 23.A bottle has 1/2 litre of juice. Riya drinks 1/4 litre. How much juice is left (in litres)? =
  24. 24.6/7 − 2/3 =
  25. 25.A bottle has 8/9 litre of juice. Anaya drinks 5/6 litre. How much juice is left (in litres)? =
  26. 26.1/2 − 1/4 =
  27. 27.A bottle has 3/5 litre of juice. Sara drinks 1/4 litre. How much juice is left (in litres)? =
  28. 28.3/10 − 1/6 =
  29. 29.1/6 − 1/10 =
  30. 30.8/9 − 1/3 =
  31. 31.Ishaan has a ribbon 1/3 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  32. 32.7/10 − 1/3 =
  33. 33.Tara has a ribbon 5/9 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  34. 34.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? =
  35. 35.Sara has a ribbon 5/6 m long and cuts off 7/10 m. How long is the ribbon now (in m)? =
  36. 36.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? =
  37. 37.A bottle has 7/8 litre of juice. Aarav drinks 1/3 litre. How much juice is left (in litres)? =
  38. 38.A bottle has 3/5 litre of juice. Anaya drinks 1/4 litre. How much juice is left (in litres)? =
  39. 39.A bottle has 4/9 litre of juice. Rohan drinks 1/3 litre. How much juice is left (in litres)? =
  40. 40.Kabir has a ribbon 3/4 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =

Answer key

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

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