← Subtracting fractions: different denominators lesson New set →

Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 685 · 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 2/5 litre of juice. Tara drinks 1/3 litre. How much juice is left (in litres)? =
  2. 2.A bottle has 5/7 litre of juice. Sara drinks 1/2 litre. How much juice is left (in litres)? =
  3. 3.1/2 − 3/10 =
  4. 4.A bottle has 5/6 litre of juice. Arjun drinks 5/8 litre. How much juice is left (in litres)? =
  5. 5.3/4 − 1/7 =
  6. 6.3/10 − 1/5 =
  7. 7.Tara has a ribbon 5/6 m long and cuts off 3/4 m. How long is the ribbon now (in m)? =
  8. 8.Vihaan has a ribbon 1/4 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  9. 9.3/4 − 4/7 =
  10. 10.A tank is 4/7 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  11. 11.Ishaan has a ribbon 2/5 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  12. 12.8/9 − 1/2 =
  13. 13.4/5 − 3/10 =
  14. 14.A tank is 3/4 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  15. 15.Aarav has a ribbon 2/3 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  16. 16.1/2 − 1/9 =
  17. 17.2/3 − 2/5 =
  18. 18.A bottle has 7/10 litre of juice. Vihaan drinks 2/5 litre. How much juice is left (in litres)? =
  19. 19.Sara has a ribbon 3/4 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  20. 20.3/4 − 5/8 =
  21. 21.A bottle has 1/2 litre of juice. Rohan drinks 1/9 litre. How much juice is left (in litres)? =
  22. 22.Kabir has a ribbon 4/7 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  23. 23.1/2 − 1/4 =
  24. 24.6/7 − 3/4 =
  25. 25.A bottle has 3/4 litre of juice. Meera drinks 1/7 litre. How much juice is left (in litres)? =
  26. 26.3/8 − 1/3 =
  27. 27.6/7 − 1/2 =
  28. 28.7/10 − 1/6 =
  29. 29.7/9 − 2/3 =
  30. 30.5/6 − 7/9 =
  31. 31.1/3 − 2/7 =
  32. 32.A tank is 4/5 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  33. 33.Kabir has a ribbon 5/7 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  34. 34.3/8 − 1/6 =
  35. 35.A tank is 7/10 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  36. 36.4/5 − 1/2 =
  37. 37.A tank is 3/7 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  38. 38.A bottle has 3/4 litre of juice. Anaya drinks 7/10 litre. How much juice is left (in litres)? =
  39. 39.7/10 − 2/5 =
  40. 40.1/3 − 1/8 =

Answer key

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

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