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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 501 · 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 tank is 1/3 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  2. 2.4/5 − 1/2 =
  3. 3.A bottle has 9/10 litre of juice. Tara drinks 2/3 litre. How much juice is left (in litres)? =
  4. 4.Anaya has a ribbon 3/4 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  5. 5.Riya has a ribbon 2/5 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  6. 6.2/7 − 1/4 =
  7. 7.Arjun has a ribbon 2/3 m long and cuts off 5/8 m. How long is the ribbon now (in m)? =
  8. 8.A bottle has 1/2 litre of juice. Kabir drinks 2/7 litre. How much juice is left (in litres)? =
  9. 9.A bottle has 3/5 litre of juice. Ishaan drinks 1/3 litre. How much juice is left (in litres)? =
  10. 10.A tank is 4/5 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  11. 11.A tank is 1/3 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  12. 12.Vihaan has a ribbon 6/7 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  13. 13.1/2 − 3/10 =
  14. 14.A tank is 6/7 full of water. Then water filling 3/4 of the tank is used. What fraction of the tank is full now? =
  15. 15.Meera has a ribbon 7/10 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  16. 16.5/6 − 1/10 =
  17. 17.2/3 − 2/7 =
  18. 18.A tank is 2/3 full of water. Then water filling 5/8 of the tank is used. What fraction of the tank is full now? =
  19. 19.Anaya has a ribbon 4/5 m long and cuts off 7/10 m. How long is the ribbon now (in m)? =
  20. 20.6/7 − 1/2 =
  21. 21.A bottle has 8/9 litre of juice. Sara drinks 1/6 litre. How much juice is left (in litres)? =
  22. 22.7/10 − 1/4 =
  23. 23.1/2 − 4/9 =
  24. 24.A bottle has 6/7 litre of juice. Kabir drinks 3/4 litre. How much juice is left (in litres)? =
  25. 25.Meera has a ribbon 7/10 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  26. 26.Aarav has a ribbon 6/7 m long and cuts off 3/4 m. How long is the ribbon now (in m)? =
  27. 27.5/7 − 1/2 =
  28. 28.3/4 − 1/7 =
  29. 29.A tank is 6/7 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  30. 30.A bottle has 7/10 litre of juice. Diya drinks 1/5 litre. How much juice is left (in litres)? =
  31. 31.1/3 − 1/10 =
  32. 32.3/4 − 3/7 =
  33. 33.2/3 − 1/9 =
  34. 34.A tank is 3/4 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  35. 35.Diya has a ribbon 4/5 m long and cuts off 3/4 m. How long is the ribbon now (in m)? =
  36. 36.1/2 − 1/6 =
  37. 37.A bottle has 1/2 litre of juice. Vihaan drinks 2/5 litre. How much juice is left (in litres)? =
  38. 38.A bottle has 3/4 litre of juice. Sara drinks 1/8 litre. How much juice is left (in litres)? =
  39. 39.3/4 − 2/5 =
  40. 40.3/4 − 1/3 =

Answer key

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

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