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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 536 · 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 9/10 full of water. Then water filling 3/4 of the tank is used. What fraction of the tank is full now? =
  2. 2.Kabir has a ribbon 1/3 m long and cuts off 2/9 m. How long is the ribbon now (in m)? =
  3. 3.2/3 − 4/7 =
  4. 4.9/10 − 2/5 =
  5. 5.A tank is 9/10 full of water. Then water filling 4/5 of the tank is used. What fraction of the tank is full now? =
  6. 6.1/6 − 1/9 =
  7. 7.A tank is 2/3 full of water. Then water filling 3/8 of the tank is used. What fraction of the tank is full now? =
  8. 8.7/10 − 3/5 =
  9. 9.Arjun has a ribbon 2/3 m long and cuts off 5/9 m. How long is the ribbon now (in m)? =
  10. 10.A tank is 2/3 full of water. Then water filling 1/9 of the tank is used. What fraction of the tank is full now? =
  11. 11.7/8 − 1/4 =
  12. 12.1/3 − 1/5 =
  13. 13.3/7 − 1/3 =
  14. 14.Sara has a ribbon 3/5 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  15. 15.Sara has a ribbon 6/7 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  16. 16.5/6 − 5/9 =
  17. 17.Meera has a ribbon 7/8 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  18. 18.5/6 − 1/9 =
  19. 19.Meera has a ribbon 7/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  20. 20.4/7 − 1/2 =
  21. 21.5/6 − 2/5 =
  22. 22.Rohan has a ribbon 3/10 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  23. 23.A bottle has 1/2 litre of juice. Diya drinks 1/5 litre. How much juice is left (in litres)? =
  24. 24.3/8 − 1/4 =
  25. 25.3/5 − 1/3 =
  26. 26.Ishaan has a ribbon 4/5 m long and cuts off 7/10 m. How long is the ribbon now (in m)? =
  27. 27.5/9 − 1/3 =
  28. 28.A bottle has 5/6 litre of juice. Sara drinks 2/5 litre. How much juice is left (in litres)? =
  29. 29.4/5 − 1/4 =
  30. 30.8/9 − 5/6 =
  31. 31.3/4 − 4/7 =
  32. 32.A tank is 9/10 full of water. Then water filling 2/5 of the tank is used. What fraction of the tank is full now? =
  33. 33.A tank is 1/4 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  34. 34.2/3 − 1/2 =
  35. 35.A bottle has 5/6 litre of juice. Kabir drinks 2/9 litre. How much juice is left (in litres)? =
  36. 36.A bottle has 5/8 litre of juice. Vihaan drinks 1/6 litre. How much juice is left (in litres)? =
  37. 37.A bottle has 1/5 litre of juice. Ishaan drinks 1/6 litre. How much juice is left (in litres)? =
  38. 38.A tank is 7/8 full of water. Then water filling 3/4 of the tank is used. What fraction of the tank is full now? =
  39. 39.4/5 − 2/3 =
  40. 40.Aarav has a ribbon 5/8 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =

Answer key

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

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