← Subtracting fractions: different denominators lesson New set →

Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 197 · 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.Sara has a ribbon 9/10 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  2. 2.A tank is 4/5 full of water. Then water filling 7/10 of the tank is used. What fraction of the tank is full now? =
  3. 3.Diya has a ribbon 2/3 m long and cuts off 3/8 m. How long is the ribbon now (in m)? =
  4. 4.A bottle has 1/6 litre of juice. Tara drinks 1/9 litre. How much juice is left (in litres)? =
  5. 5.5/7 − 1/4 =
  6. 6.3/5 − 1/10 =
  7. 7.Aarav has a ribbon 1/5 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  8. 8.A bottle has 2/3 litre of juice. Diya drinks 5/8 litre. How much juice is left (in litres)? =
  9. 9.Aarav has a ribbon 7/8 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  10. 10.Tara has a ribbon 3/5 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  11. 11.A bottle has 1/2 litre of juice. Rohan drinks 4/9 litre. How much juice is left (in litres)? =
  12. 12.A bottle has 4/9 litre of juice. Arjun drinks 1/3 litre. How much juice is left (in litres)? =
  13. 13.8/9 − 1/2 =
  14. 14.5/6 − 3/5 =
  15. 15.7/9 − 1/6 =
  16. 16.2/3 − 1/8 =
  17. 17.3/4 − 2/7 =
  18. 18.4/5 − 1/6 =
  19. 19.A bottle has 1/2 litre of juice. Sara drinks 2/9 litre. How much juice is left (in litres)? =
  20. 20.7/10 − 2/5 =
  21. 21.9/10 − 2/3 =
  22. 22.A tank is 1/3 full of water. Then water filling 2/9 of the tank is used. What fraction of the tank is full now? =
  23. 23.A bottle has 5/6 litre of juice. Riya drinks 3/8 litre. How much juice is left (in litres)? =
  24. 24.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? =
  25. 25.A bottle has 8/9 litre of juice. Sara drinks 1/6 litre. How much juice is left (in litres)? =
  26. 26.7/9 − 1/2 =
  27. 27.A tank is 2/3 full of water. Then water filling 3/5 of the tank is used. What fraction of the tank is full now? =
  28. 28.3/7 − 1/3 =
  29. 29.2/3 − 1/10 =
  30. 30.2/3 − 3/5 =
  31. 31.3/5 − 1/6 =
  32. 32.Anaya has a ribbon 1/6 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  33. 33.2/3 − 3/8 =
  34. 34.4/5 − 1/4 =
  35. 35.5/6 − 1/8 =
  36. 36.Aarav has a ribbon 7/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  37. 37.A tank is 7/10 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  38. 38.7/10 − 1/5 =
  39. 39.A tank is 3/4 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  40. 40.Rohan has a ribbon 6/7 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =

Answer key

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

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