← Subtracting fractions: different denominators lesson New set →

Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 333 · 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. 1.1/2 − 3/10 =
  2. 2.1/2 − 4/9 =
  3. 3.8/9 − 5/6 =
  4. 4.3/4 − 1/5 =
  5. 5.A tank is 3/5 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  6. 6.9/10 − 2/5 =
  7. 7.A bottle has 2/3 litre of juice. Sara drinks 3/10 litre. How much juice is left (in litres)? =
  8. 8.1/3 − 2/7 =
  9. 9.7/9 − 1/2 =
  10. 10.2/3 − 3/8 =
  11. 11.3/4 − 4/7 =
  12. 12.9/10 − 2/3 =
  13. 13.A bottle has 4/5 litre of juice. Ishaan drinks 1/10 litre. How much juice is left (in litres)? =
  14. 14.A tank is 6/7 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  15. 15.Sara has a ribbon 5/8 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  16. 16.1/3 − 1/7 =
  17. 17.3/4 − 3/7 =
  18. 18.A tank is 1/2 full of water. Then water filling 1/7 of the tank is used. What fraction of the tank is full now? =
  19. 19.A bottle has 7/9 litre of juice. Diya drinks 1/6 litre. How much juice is left (in litres)? =
  20. 20.2/3 − 1/9 =
  21. 21.Arjun has a ribbon 1/2 m long and cuts off 2/9 m. How long is the ribbon now (in m)? =
  22. 22.7/10 − 1/5 =
  23. 23.1/2 − 1/9 =
  24. 24.Anaya has a ribbon 3/4 m long and cuts off 3/7 m. How long is the ribbon now (in m)? =
  25. 25.8/9 − 2/3 =
  26. 26.4/9 − 1/3 =
  27. 27.A bottle has 3/7 litre of juice. Riya drinks 1/4 litre. How much juice is left (in litres)? =
  28. 28.A bottle has 2/5 litre of juice. Vihaan drinks 3/10 litre. How much juice is left (in litres)? =
  29. 29.2/3 − 4/9 =
  30. 30.8/9 − 1/3 =
  31. 31.A tank is 3/8 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  32. 32.A bottle has 5/9 litre of juice. Ishaan drinks 1/3 litre. How much juice is left (in litres)? =
  33. 33.9/10 − 1/3 =
  34. 34.A bottle has 7/8 litre of juice. Diya drinks 1/2 litre. How much juice is left (in litres)? =
  35. 35.1/4 − 1/5 =
  36. 36.Tara has a ribbon 5/6 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  37. 37.A tank is 5/9 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  38. 38.3/5 − 1/3 =
  39. 39.A bottle has 6/7 litre of juice. Diya drinks 1/2 litre. How much juice is left (in litres)? =
  40. 40.Meera has a ribbon 1/2 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =

Answer key

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

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