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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 500 · 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 1/2 litre of juice. Aarav drinks 1/10 litre. How much juice is left (in litres)? =
  2. 2.4/5 − 1/4 =
  3. 3.5/6 − 1/3 =
  4. 4.A bottle has 2/3 litre of juice. Meera drinks 3/7 litre. How much juice is left (in litres)? =
  5. 5.Kabir has a ribbon 5/8 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  6. 6.A tank is 7/8 full of water. Then water filling 5/6 of the tank is used. What fraction of the tank is full now? =
  7. 7.A bottle has 3/8 litre of juice. Riya drinks 1/4 litre. How much juice is left (in litres)? =
  8. 8.3/4 − 1/10 =
  9. 9.1/4 − 1/6 =
  10. 10.Rohan has a ribbon 9/10 m long and cuts off 4/5 m. How long is the ribbon now (in m)? =
  11. 11.1/2 − 1/5 =
  12. 12.A tank is 3/7 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  13. 13.5/7 − 1/4 =
  14. 14.8/9 − 1/3 =
  15. 15.A bottle has 3/4 litre of juice. Sara drinks 3/8 litre. How much juice is left (in litres)? =
  16. 16.Kabir has a ribbon 3/10 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  17. 17.Sara has a ribbon 8/9 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  18. 18.A bottle has 2/3 litre of juice. Anaya drinks 3/10 litre. How much juice is left (in litres)? =
  19. 19.7/8 − 2/3 =
  20. 20.3/4 − 1/3 =
  21. 21.A bottle has 3/5 litre of juice. Kabir drinks 3/10 litre. How much juice is left (in litres)? =
  22. 22.A bottle has 1/3 litre of juice. Kabir drinks 3/10 litre. How much juice is left (in litres)? =
  23. 23.9/10 − 2/3 =
  24. 24.A bottle has 7/10 litre of juice. Arjun drinks 1/5 litre. How much juice is left (in litres)? =
  25. 25.A bottle has 3/10 litre of juice. Diya drinks 1/5 litre. How much juice is left (in litres)? =
  26. 26.A bottle has 7/9 litre of juice. Rohan drinks 1/3 litre. How much juice is left (in litres)? =
  27. 27.A tank is 5/6 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  28. 28.A bottle has 3/4 litre of juice. Rohan drinks 3/5 litre. How much juice is left (in litres)? =
  29. 29.4/5 − 7/10 =
  30. 30.6/7 − 1/2 =
  31. 31.Meera has a ribbon 2/3 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  32. 32.7/8 − 5/6 =
  33. 33.3/4 − 1/5 =
  34. 34.3/5 − 1/6 =
  35. 35.2/3 − 1/8 =
  36. 36.8/9 − 1/2 =
  37. 37.3/7 − 1/3 =
  38. 38.A bottle has 5/8 litre of juice. Tara drinks 1/2 litre. How much juice is left (in litres)? =
  39. 39.A tank is 1/3 full of water. Then water filling 2/7 of the tank is used. What fraction of the tank is full now? =
  40. 40.Meera has a ribbon 3/4 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =

Answer key

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

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