← Subtracting fractions: different denominators lesson New set →

Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 81 · 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. 1.6/7 − 1/3 =
  2. 2.4/9 − 1/3 =
  3. 3.Ishaan has a ribbon 4/7 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  4. 4.5/8 − 1/4 =
  5. 5.9/10 − 1/6 =
  6. 6.5/9 − 1/6 =
  7. 7.3/8 − 1/3 =
  8. 8.A tank is 2/3 full of water. Then water filling 2/5 of the tank is used. What fraction of the tank is full now? =
  9. 9.2/3 − 2/5 =
  10. 10.2/3 − 1/9 =
  11. 11.5/7 − 1/4 =
  12. 12.A bottle has 2/7 litre of juice. Riya drinks 1/4 litre. How much juice is left (in litres)? =
  13. 13.3/4 − 3/8 =
  14. 14.A tank is 6/7 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  15. 15.Rohan has a ribbon 8/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  16. 16.2/3 − 3/8 =
  17. 17.4/5 − 1/3 =
  18. 18.Anaya has a ribbon 1/3 m long and cuts off 2/9 m. How long is the ribbon now (in m)? =
  19. 19.A tank is 5/7 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  20. 20.Sara has a ribbon 5/8 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  21. 21.4/5 − 1/4 =
  22. 22.1/6 − 1/8 =
  23. 23.A bottle has 4/5 litre of juice. Anaya drinks 1/4 litre. How much juice is left (in litres)? =
  24. 24.8/9 − 1/3 =
  25. 25.Diya has a ribbon 2/5 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  26. 26.A tank is 4/7 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  27. 27.A bottle has 3/10 litre of juice. Riya drinks 1/4 litre. How much juice is left (in litres)? =
  28. 28.1/2 − 2/5 =
  29. 29.5/9 − 1/2 =
  30. 30.7/10 − 1/6 =
  31. 31.A bottle has 1/2 litre of juice. Aarav drinks 2/9 litre. How much juice is left (in litres)? =
  32. 32.A bottle has 8/9 litre of juice. Riya drinks 1/6 litre. How much juice is left (in litres)? =
  33. 33.A bottle has 3/4 litre of juice. Rohan drinks 3/10 litre. How much juice is left (in litres)? =
  34. 34.1/3 − 2/9 =
  35. 35.3/4 − 3/7 =
  36. 36.Rohan has a ribbon 3/8 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  37. 37.1/3 − 1/9 =
  38. 38.3/10 − 1/4 =
  39. 39.A bottle has 6/7 litre of juice. Meera drinks 3/4 litre. How much juice is left (in litres)? =
  40. 40.Riya has a ribbon 8/9 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =

Answer key

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

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