← Subtracting fractions: different denominators lesson New set →

Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 335 · 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. 1.1/3 − 1/9 =
  2. 2.2/3 − 1/8 =
  3. 3.A tank is 4/5 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  4. 4.2/5 − 1/10 =
  5. 5.A bottle has 6/7 litre of juice. Aarav drinks 1/4 litre. How much juice is left (in litres)? =
  6. 6.A tank is 1/2 full of water. Then water filling 3/8 of the tank is used. What fraction of the tank is full now? =
  7. 7.A tank is 2/5 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  8. 8.1/2 − 1/8 =
  9. 9.8/9 − 1/6 =
  10. 10.3/4 − 1/10 =
  11. 11.5/6 − 5/8 =
  12. 12.Arjun has a ribbon 4/5 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  13. 13.2/3 − 1/10 =
  14. 14.Arjun has a ribbon 5/6 m long and cuts off 4/9 m. How long is the ribbon now (in m)? =
  15. 15.2/3 − 1/5 =
  16. 16.7/8 − 3/4 =
  17. 17.A tank is 7/8 full of water. Then water filling 3/4 of the tank is used. What fraction of the tank is full now? =
  18. 18.A bottle has 3/5 litre of juice. Rohan drinks 3/10 litre. How much juice is left (in litres)? =
  19. 19.6/7 − 2/3 =
  20. 20.A bottle has 2/3 litre of juice. Kabir drinks 3/8 litre. How much juice is left (in litres)? =
  21. 21.1/2 − 3/7 =
  22. 22.A tank is 1/3 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  23. 23.3/4 − 2/5 =
  24. 24.3/4 − 3/7 =
  25. 25.Tara has a ribbon 7/8 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  26. 26.2/3 − 1/9 =
  27. 27.1/2 − 1/5 =
  28. 28.A bottle has 5/7 litre of juice. Riya drinks 1/2 litre. How much juice is left (in litres)? =
  29. 29.3/4 − 3/8 =
  30. 30.A tank is 1/6 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  31. 31.Meera has a ribbon 2/3 m long and cuts off 3/7 m. How long is the ribbon now (in m)? =
  32. 32.A tank is 7/9 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  33. 33.7/9 − 1/2 =
  34. 34.Vihaan has a ribbon 3/4 m long and cuts off 3/7 m. How long is the ribbon now (in m)? =
  35. 35.Aarav has a ribbon 1/4 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  36. 36.Sara has a ribbon 2/3 m long and cuts off 5/8 m. How long is the ribbon now (in m)? =
  37. 37.Tara has a ribbon 3/10 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  38. 38.A bottle has 7/8 litre of juice. Ishaan drinks 1/6 litre. How much juice is left (in litres)? =
  39. 39.A tank is 2/5 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  40. 40.9/10 − 1/6 =

Answer key

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

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