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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 257 · 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.Rohan has a ribbon 6/7 m long and cuts off 3/4 m. How long is the ribbon now (in m)? =
  2. 2.9/10 − 2/5 =
  3. 3.A tank is 7/9 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  4. 4.7/9 − 1/6 =
  5. 5.A tank is 1/3 full of water. Then water filling 1/9 of the tank is used. What fraction of the tank is full now? =
  6. 6.A bottle has 5/6 litre of juice. Meera drinks 1/4 litre. How much juice is left (in litres)? =
  7. 7.A bottle has 3/4 litre of juice. Diya drinks 3/10 litre. How much juice is left (in litres)? =
  8. 8.A tank is 7/8 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  9. 9.Anaya has a ribbon 5/6 m long and cuts off 4/9 m. How long is the ribbon now (in m)? =
  10. 10.Kabir has a ribbon 5/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  11. 11.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? =
  12. 12.Ishaan has a ribbon 9/10 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  13. 13.5/8 − 1/2 =
  14. 14.Tara has a ribbon 3/4 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  15. 15.A bottle has 3/7 litre of juice. Arjun drinks 1/4 litre. How much juice is left (in litres)? =
  16. 16.Ishaan has a ribbon 5/6 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  17. 17.A tank is 3/4 full of water. Then water filling 3/7 of the tank is used. What fraction of the tank is full now? =
  18. 18.2/3 − 4/7 =
  19. 19.A bottle has 2/7 litre of juice. Riya drinks 1/4 litre. How much juice is left (in litres)? =
  20. 20.5/6 − 7/9 =
  21. 21.3/10 − 1/5 =
  22. 22.A tank is 8/9 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  23. 23.2/3 − 5/8 =
  24. 24.A bottle has 1/2 litre of juice. Kabir drinks 4/9 litre. How much juice is left (in litres)? =
  25. 25.3/4 − 4/7 =
  26. 26.1/2 − 1/7 =
  27. 27.2/3 − 4/9 =
  28. 28.5/7 − 1/4 =
  29. 29.5/6 − 3/8 =
  30. 30.6/7 − 2/3 =
  31. 31.A bottle has 1/2 litre of juice. Tara drinks 3/10 litre. How much juice is left (in litres)? =
  32. 32.A bottle has 4/7 litre of juice. Sara drinks 1/3 litre. How much juice is left (in litres)? =
  33. 33.A bottle has 1/3 litre of juice. Aarav drinks 1/6 litre. How much juice is left (in litres)? =
  34. 34.A bottle has 9/10 litre of juice. Tara drinks 1/5 litre. How much juice is left (in litres)? =
  35. 35.3/4 − 3/10 =
  36. 36.3/5 − 3/10 =
  37. 37.5/9 − 1/3 =
  38. 38.3/4 − 1/10 =
  39. 39.3/4 − 7/10 =
  40. 40.7/10 − 1/2 =

Answer key

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

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