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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 210 · 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 7/10 litre of juice. Arjun drinks 1/4 litre. How much juice is left (in litres)? =
  2. 2.Sara has a ribbon 8/9 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  3. 3.A tank is 7/9 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  4. 4.Tara has a ribbon 4/7 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  5. 5.5/9 − 1/2 =
  6. 6.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? =
  7. 7.A bottle has 3/4 litre of juice. Aarav drinks 3/8 litre. How much juice is left (in litres)? =
  8. 8.A bottle has 2/3 litre of juice. Vihaan drinks 3/8 litre. How much juice is left (in litres)? =
  9. 9.2/3 − 2/9 =
  10. 10.1/2 − 1/9 =
  11. 11.A tank is 9/10 full of water. Then water filling 3/5 of the tank is used. What fraction of the tank is full now? =
  12. 12.1/5 − 1/10 =
  13. 13.9/10 − 2/5 =
  14. 14.3/8 − 1/6 =
  15. 15.Arjun has a ribbon 3/4 m long and cuts off 5/8 m. How long is the ribbon now (in m)? =
  16. 16.Riya has a ribbon 9/10 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  17. 17.3/5 − 1/10 =
  18. 18.1/3 − 1/7 =
  19. 19.A bottle has 1/4 litre of juice. Tara drinks 1/5 litre. How much juice is left (in litres)? =
  20. 20.1/2 − 1/3 =
  21. 21.A bottle has 3/7 litre of juice. Arjun drinks 1/3 litre. How much juice is left (in litres)? =
  22. 22.A bottle has 8/9 litre of juice. Riya drinks 1/2 litre. How much juice is left (in litres)? =
  23. 23.1/4 − 1/8 =
  24. 24.A bottle has 5/8 litre of juice. Anaya drinks 1/6 litre. How much juice is left (in litres)? =
  25. 25.7/9 − 2/3 =
  26. 26.5/6 − 2/5 =
  27. 27.A bottle has 2/3 litre of juice. Rohan drinks 1/7 litre. How much juice is left (in litres)? =
  28. 28.A bottle has 7/8 litre of juice. Aarav drinks 1/3 litre. How much juice is left (in litres)? =
  29. 29.1/2 − 2/7 =
  30. 30.A bottle has 5/7 litre of juice. Anaya drinks 1/3 litre. How much juice is left (in litres)? =
  31. 31.1/2 − 3/8 =
  32. 32.6/7 − 3/4 =
  33. 33.7/8 − 2/3 =
  34. 34.3/4 − 3/8 =
  35. 35.Anaya has a ribbon 7/8 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  36. 36.A tank is 1/2 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  37. 37.3/4 − 7/10 =
  38. 38.Rohan has a ribbon 4/5 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  39. 39.A bottle has 3/4 litre of juice. Ishaan drinks 2/3 litre. How much juice is left (in litres)? =
  40. 40.2/3 − 3/7 =

Answer key

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

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