← Subtracting fractions: different denominators lesson New set →

Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 487 · 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.Vihaan has a ribbon 2/3 m long and cuts off 5/8 m. How long is the ribbon now (in m)? =
  2. 2.2/3 − 2/9 =
  3. 3.A tank is 2/3 full of water. Then water filling 4/9 of the tank is used. What fraction of the tank is full now? =
  4. 4.3/10 − 1/6 =
  5. 5.5/6 − 5/8 =
  6. 6.A tank is 3/5 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  7. 7.1/4 − 1/5 =
  8. 8.2/3 − 5/8 =
  9. 9.3/4 − 3/5 =
  10. 10.2/3 − 1/5 =
  11. 11.5/6 − 5/9 =
  12. 12.1/2 − 2/9 =
  13. 13.Sara has a ribbon 3/4 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  14. 14.A tank is 3/4 full of water. Then water filling 3/8 of the tank is used. What fraction of the tank is full now? =
  15. 15.3/4 − 1/7 =
  16. 16.A bottle has 2/3 litre of juice. Vihaan drinks 4/7 litre. How much juice is left (in litres)? =
  17. 17.1/3 − 3/10 =
  18. 18.2/5 − 1/6 =
  19. 19.A bottle has 4/5 litre of juice. Riya drinks 1/4 litre. How much juice is left (in litres)? =
  20. 20.5/7 − 1/4 =
  21. 21.A tank is 3/4 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  22. 22.8/9 − 5/6 =
  23. 23.A bottle has 2/5 litre of juice. Sara drinks 1/10 litre. How much juice is left (in litres)? =
  24. 24.3/4 − 5/8 =
  25. 25.Aarav has a ribbon 1/2 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  26. 26.1/3 − 2/7 =
  27. 27.A bottle has 9/10 litre of juice. Vihaan drinks 1/5 litre. How much juice is left (in litres)? =
  28. 28.5/9 − 1/3 =
  29. 29.1/4 − 1/6 =
  30. 30.A bottle has 3/5 litre of juice. Anaya drinks 1/10 litre. How much juice is left (in litres)? =
  31. 31.A bottle has 2/3 litre of juice. Tara drinks 2/7 litre. How much juice is left (in litres)? =
  32. 32.A bottle has 5/6 litre of juice. Kabir drinks 5/9 litre. How much juice is left (in litres)? =
  33. 33.A tank is 5/6 full of water. Then water filling 7/10 of the tank is used. What fraction of the tank is full now? =
  34. 34.3/5 − 1/2 =
  35. 35.A bottle has 8/9 litre of juice. Meera drinks 1/6 litre. How much juice is left (in litres)? =
  36. 36.A tank is 6/7 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  37. 37.Arjun has a ribbon 2/3 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  38. 38.9/10 − 2/5 =
  39. 39.1/4 − 1/7 =
  40. 40.2/5 − 1/4 =

Answer key

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

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