← Subtracting fractions: different denominators lesson New set →

Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 306 · 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 5/7 litre of juice. Rohan drinks 1/2 litre. How much juice is left (in litres)? =
  2. 2.Rohan has a ribbon 1/4 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  3. 3.A bottle has 5/7 litre of juice. Meera drinks 1/4 litre. How much juice is left (in litres)? =
  4. 4.1/3 − 1/5 =
  5. 5.3/5 − 1/2 =
  6. 6.4/5 − 3/4 =
  7. 7.A bottle has 1/3 litre of juice. Kabir drinks 2/9 litre. How much juice is left (in litres)? =
  8. 8.1/2 − 2/9 =
  9. 9.2/5 − 1/10 =
  10. 10.3/8 − 1/6 =
  11. 11.5/6 − 1/10 =
  12. 12.1/2 − 1/8 =
  13. 13.A bottle has 5/6 litre of juice. Kabir drinks 3/5 litre. How much juice is left (in litres)? =
  14. 14.3/4 − 2/7 =
  15. 15.3/10 − 1/6 =
  16. 16.A tank is 1/3 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  17. 17.6/7 − 1/4 =
  18. 18.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? =
  19. 19.1/2 − 4/9 =
  20. 20.2/5 − 1/6 =
  21. 21.5/7 − 1/3 =
  22. 22.A tank is 2/3 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  23. 23.9/10 − 4/5 =
  24. 24.A tank is 1/6 full of water. Then water filling 1/9 of the tank is used. What fraction of the tank is full now? =
  25. 25.Aarav has a ribbon 3/4 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  26. 26.A bottle has 7/8 litre of juice. Aarav drinks 1/6 litre. How much juice is left (in litres)? =
  27. 27.A tank is 1/3 full of water. Then water filling 1/9 of the tank is used. What fraction of the tank is full now? =
  28. 28.8/9 − 2/3 =
  29. 29.Ishaan has a ribbon 3/7 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  30. 30.4/9 − 1/6 =
  31. 31.Rohan has a ribbon 2/3 m long and cuts off 3/8 m. How long is the ribbon now (in m)? =
  32. 32.Aarav has a ribbon 3/5 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  33. 33.1/5 − 1/10 =
  34. 34.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? =
  35. 35.4/5 − 1/3 =
  36. 36.A bottle has 1/2 litre of juice. Rohan drinks 3/7 litre. How much juice is left (in litres)? =
  37. 37.Meera has a ribbon 2/3 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  38. 38.2/5 − 1/4 =
  39. 39.Riya has a ribbon 3/10 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  40. 40.7/8 − 3/4 =

Answer key

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

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