← Subtracting fractions: different denominators lesson New set →

Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 117 · 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.A bottle has 1/4 litre of juice. Vihaan drinks 1/7 litre. How much juice is left (in litres)? =
  2. 2.Aarav has a ribbon 2/3 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  3. 3.2/3 − 1/9 =
  4. 4.Meera has a ribbon 7/10 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  5. 5.1/3 − 1/4 =
  6. 6.Aarav has a ribbon 4/5 m long and cuts off 3/4 m. How long is the ribbon now (in m)? =
  7. 7.Kabir has a ribbon 5/7 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  8. 8.A tank is 3/8 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  9. 9.A bottle has 1/2 litre of juice. Aarav drinks 3/7 litre. How much juice is left (in litres)? =
  10. 10.1/4 − 1/10 =
  11. 11.5/6 − 1/5 =
  12. 12.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? =
  13. 13.9/10 − 3/5 =
  14. 14.7/9 − 1/6 =
  15. 15.3/10 − 1/6 =
  16. 16.A bottle has 9/10 litre of juice. Arjun drinks 2/5 litre. How much juice is left (in litres)? =
  17. 17.2/3 − 1/2 =
  18. 18.A tank is 2/3 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  19. 19.2/5 − 1/4 =
  20. 20.A bottle has 1/5 litre of juice. Tara drinks 1/10 litre. How much juice is left (in litres)? =
  21. 21.1/2 − 3/7 =
  22. 22.3/4 − 3/5 =
  23. 23.9/10 − 2/3 =
  24. 24.3/10 − 1/4 =
  25. 25.Anaya has a ribbon 5/6 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  26. 26.7/8 − 3/4 =
  27. 27.5/6 − 5/9 =
  28. 28.Aarav has a ribbon 2/3 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  29. 29.A bottle has 2/3 litre of juice. Aarav drinks 1/10 litre. How much juice is left (in litres)? =
  30. 30.A tank is 5/9 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  31. 31.5/6 − 3/8 =
  32. 32.Sara has a ribbon 5/7 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  33. 33.A tank is 1/6 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  34. 34.6/7 − 1/3 =
  35. 35.7/8 − 1/2 =
  36. 36.A tank is 1/5 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  37. 37.A bottle has 1/3 litre of juice. Sara drinks 1/8 litre. How much juice is left (in litres)? =
  38. 38.5/8 − 1/6 =
  39. 39.8/9 − 5/6 =
  40. 40.A bottle has 5/9 litre of juice. Aarav drinks 1/3 litre. How much juice is left (in litres)? =

Answer key

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

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