← Subtracting fractions: different denominators lesson New set →

Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 121 · 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 2/5 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  2. 2.5/6 − 1/9 =
  3. 3.3/4 − 4/7 =
  4. 4.2/3 − 3/10 =
  5. 5.A bottle has 5/6 litre of juice. Tara drinks 3/8 litre. How much juice is left (in litres)? =
  6. 6.A bottle has 4/7 litre of juice. Diya drinks 1/3 litre. How much juice is left (in litres)? =
  7. 7.2/3 − 4/7 =
  8. 8.7/8 − 1/6 =
  9. 9.Riya has a ribbon 1/2 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  10. 10.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? =
  11. 11.Ishaan has a ribbon 1/5 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  12. 12.A bottle has 4/5 litre of juice. Rohan drinks 3/10 litre. How much juice is left (in litres)? =
  13. 13.5/9 − 1/6 =
  14. 14.1/3 − 2/9 =
  15. 15.A bottle has 3/8 litre of juice. Vihaan drinks 1/6 litre. How much juice is left (in litres)? =
  16. 16.5/8 − 1/6 =
  17. 17.A bottle has 7/8 litre of juice. Kabir drinks 2/3 litre. How much juice is left (in litres)? =
  18. 18.A tank is 1/2 full of water. Then water filling 2/5 of the tank is used. What fraction of the tank is full now? =
  19. 19.2/5 − 1/6 =
  20. 20.7/10 − 2/5 =
  21. 21.1/2 − 3/7 =
  22. 22.A bottle has 4/5 litre of juice. Vihaan drinks 1/2 litre. How much juice is left (in litres)? =
  23. 23.2/3 − 1/9 =
  24. 24.A bottle has 6/7 litre of juice. Rohan drinks 3/4 litre. How much juice is left (in litres)? =
  25. 25.A tank is 2/3 full of water. Then water filling 3/8 of the tank is used. What fraction of the tank is full now? =
  26. 26.3/8 − 1/6 =
  27. 27.7/9 − 1/2 =
  28. 28.Aarav has a ribbon 4/7 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  29. 29.Kabir has a ribbon 3/7 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  30. 30.3/4 − 1/7 =
  31. 31.9/10 − 3/5 =
  32. 32.Tara has a ribbon 3/4 m long and cuts off 3/8 m. How long is the ribbon now (in m)? =
  33. 33.4/5 − 1/6 =
  34. 34.A tank is 7/8 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  35. 35.A tank is 3/8 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  36. 36.8/9 − 1/6 =
  37. 37.8/9 − 1/3 =
  38. 38.3/5 − 1/10 =
  39. 39.A tank is 5/6 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  40. 40.1/2 − 1/5 =

Answer key

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

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