← Subtracting fractions: different denominators lesson New set →

Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 160 · 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 − 1/2 =
  2. 2.A tank is 3/5 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  3. 3.1/3 − 2/7 =
  4. 4.8/9 − 1/6 =
  5. 5.1/3 − 3/10 =
  6. 6.2/5 − 1/3 =
  7. 7.2/3 − 1/5 =
  8. 8.A tank is 2/3 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  9. 9.A bottle has 3/4 litre of juice. Sara drinks 1/3 litre. How much juice is left (in litres)? =
  10. 10.9/10 − 1/5 =
  11. 11.3/4 − 1/10 =
  12. 12.A tank is 7/10 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  13. 13.Riya has a ribbon 2/3 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  14. 14.4/7 − 1/4 =
  15. 15.6/7 − 1/3 =
  16. 16.A bottle has 7/9 litre of juice. Riya drinks 1/3 litre. How much juice is left (in litres)? =
  17. 17.8/9 − 1/3 =
  18. 18.7/9 − 1/3 =
  19. 19.A bottle has 1/4 litre of juice. Diya drinks 1/8 litre. How much juice is left (in litres)? =
  20. 20.5/6 − 7/9 =
  21. 21.A tank is 5/9 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  22. 22.Aarav has a ribbon 7/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  23. 23.A bottle has 2/3 litre of juice. Tara drinks 3/7 litre. How much juice is left (in litres)? =
  24. 24.1/5 − 1/10 =
  25. 25.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? =
  26. 26.2/5 − 3/10 =
  27. 27.A tank is 4/9 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  28. 28.A bottle has 3/5 litre of juice. Kabir drinks 1/2 litre. How much juice is left (in litres)? =
  29. 29.A bottle has 5/7 litre of juice. Kabir drinks 1/3 litre. How much juice is left (in litres)? =
  30. 30.8/9 − 5/6 =
  31. 31.A bottle has 9/10 litre of juice. Rohan drinks 1/5 litre. How much juice is left (in litres)? =
  32. 32.A tank is 1/2 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  33. 33.7/9 − 2/3 =
  34. 34.A tank is 2/7 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  35. 35.A tank is 4/5 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  36. 36.Rohan has a ribbon 6/7 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  37. 37.5/6 − 2/5 =
  38. 38.7/9 − 1/2 =
  39. 39.2/3 − 3/10 =
  40. 40.A tank is 1/2 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =

Answer key

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

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