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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 311 · 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 7/9 litre of juice. Ishaan drinks 1/3 litre. How much juice is left (in litres)? =
  2. 2.3/5 − 1/2 =
  3. 3.3/5 − 1/6 =
  4. 4.A tank is 4/5 full of water. Then water filling 3/4 of the tank is used. What fraction of the tank is full now? =
  5. 5.1/3 − 2/7 =
  6. 6.1/5 − 1/10 =
  7. 7.5/6 − 1/8 =
  8. 8.7/10 − 3/5 =
  9. 9.Meera has a ribbon 7/8 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  10. 10.Kabir has a ribbon 2/3 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  11. 11.Aarav has a ribbon 1/2 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  12. 12.1/2 − 3/10 =
  13. 13.1/2 − 2/5 =
  14. 14.6/7 − 1/4 =
  15. 15.A bottle has 3/4 litre of juice. Ishaan drinks 3/7 litre. How much juice is left (in litres)? =
  16. 16.3/4 − 3/7 =
  17. 17.Rohan has a ribbon 3/10 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  18. 18.A bottle has 5/6 litre of juice. Aarav drinks 7/9 litre. How much juice is left (in litres)? =
  19. 19.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? =
  20. 20.A bottle has 5/6 litre of juice. Sara drinks 2/3 litre. How much juice is left (in litres)? =
  21. 21.A bottle has 5/7 litre of juice. Ishaan drinks 1/3 litre. How much juice is left (in litres)? =
  22. 22.1/2 − 3/7 =
  23. 23.A tank is 1/3 full of water. Then water filling 1/7 of the tank is used. What fraction of the tank is full now? =
  24. 24.A bottle has 3/4 litre of juice. Aarav drinks 3/7 litre. How much juice is left (in litres)? =
  25. 25.A bottle has 3/4 litre of juice. Tara drinks 7/10 litre. How much juice is left (in litres)? =
  26. 26.2/3 − 4/7 =
  27. 27.A tank is 5/6 full of water. Then water filling 1/9 of the tank is used. What fraction of the tank is full now? =
  28. 28.2/5 − 3/10 =
  29. 29.Ishaan has a ribbon 7/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  30. 30.Sara has a ribbon 5/8 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  31. 31.A bottle has 3/4 litre of juice. Tara drinks 1/7 litre. How much juice is left (in litres)? =
  32. 32.1/3 − 1/7 =
  33. 33.A bottle has 7/10 litre of juice. Riya drinks 1/2 litre. How much juice is left (in litres)? =
  34. 34.Meera has a ribbon 8/9 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  35. 35.3/8 − 1/4 =
  36. 36.4/5 − 7/10 =
  37. 37.7/10 − 2/3 =
  38. 38.5/6 − 2/3 =
  39. 39.A tank is 5/7 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  40. 40.9/10 − 4/5 =

Answer key

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

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