← Subtracting fractions: different denominators lesson New set →

Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 911 · 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.Riya has a ribbon 1/2 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  2. 2.7/8 − 2/3 =
  3. 3.3/10 − 1/5 =
  4. 4.Rohan has a ribbon 8/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  5. 5.Anaya has a ribbon 3/5 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  6. 6.6/7 − 1/2 =
  7. 7.1/2 − 2/9 =
  8. 8.3/5 − 1/2 =
  9. 9.A bottle has 1/6 litre of juice. Rohan drinks 1/10 litre. How much juice is left (in litres)? =
  10. 10.9/10 − 3/4 =
  11. 11.A tank is 2/3 full of water. Then water filling 2/7 of the tank is used. What fraction of the tank is full now? =
  12. 12.3/5 − 1/6 =
  13. 13.Meera has a ribbon 5/6 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  14. 14.1/3 − 1/5 =
  15. 15.9/10 − 1/4 =
  16. 16.5/6 − 7/9 =
  17. 17.6/7 − 2/3 =
  18. 18.3/4 − 1/7 =
  19. 19.A bottle has 1/3 litre of juice. Anaya drinks 3/10 litre. How much juice is left (in litres)? =
  20. 20.3/4 − 3/10 =
  21. 21.5/6 − 3/5 =
  22. 22.A bottle has 2/3 litre of juice. Riya drinks 2/7 litre. How much juice is left (in litres)? =
  23. 23.A bottle has 8/9 litre of juice. Vihaan drinks 1/6 litre. How much juice is left (in litres)? =
  24. 24.2/9 − 1/6 =
  25. 25.2/3 − 4/9 =
  26. 26.A tank is 4/5 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  27. 27.2/5 − 1/10 =
  28. 28.1/2 − 2/5 =
  29. 29.Sara has a ribbon 3/8 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  30. 30.Ishaan has a ribbon 3/5 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  31. 31.1/2 − 4/9 =
  32. 32.Tara has a ribbon 4/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  33. 33.Arjun has a ribbon 3/8 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  34. 34.A bottle has 3/4 litre of juice. Meera drinks 1/3 litre. How much juice is left (in litres)? =
  35. 35.9/10 − 2/5 =
  36. 36.A tank is 5/7 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  37. 37.Anaya has a ribbon 1/3 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  38. 38.A tank is 9/10 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  39. 39.7/8 − 1/3 =
  40. 40.A bottle has 9/10 litre of juice. Sara drinks 4/5 litre. How much juice is left (in litres)? =

Answer key

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

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