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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 233 · 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 4/5 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  2. 2.5/6 − 3/8 =
  3. 3.A bottle has 7/9 litre of juice. Riya drinks 2/3 litre. How much juice is left (in litres)? =
  4. 4.A bottle has 9/10 litre of juice. Ishaan drinks 4/5 litre. How much juice is left (in litres)? =
  5. 5.A bottle has 5/6 litre of juice. Ishaan drinks 3/10 litre. How much juice is left (in litres)? =
  6. 6.2/5 − 1/6 =
  7. 7.Sara has a ribbon 5/6 m long and cuts off 5/9 m. How long is the ribbon now (in m)? =
  8. 8.4/5 − 2/3 =
  9. 9.Aarav has a ribbon 2/3 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  10. 10.7/8 − 1/2 =
  11. 11.1/4 − 1/7 =
  12. 12.A tank is 1/4 full of water. Then water filling 1/7 of the tank is used. What fraction of the tank is full now? =
  13. 13.5/6 − 5/8 =
  14. 14.2/3 − 2/9 =
  15. 15.1/4 − 1/8 =
  16. 16.5/6 − 1/5 =
  17. 17.A bottle has 5/6 litre of juice. Riya drinks 3/8 litre. How much juice is left (in litres)? =
  18. 18.A tank is 5/7 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  19. 19.A tank is 9/10 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  20. 20.3/4 − 5/8 =
  21. 21.Rohan has a ribbon 2/3 m long and cuts off 2/9 m. How long is the ribbon now (in m)? =
  22. 22.Aarav has a ribbon 2/3 m long and cuts off 5/8 m. How long is the ribbon now (in m)? =
  23. 23.5/7 − 1/3 =
  24. 24.A bottle has 9/10 litre of juice. Vihaan drinks 5/6 litre. How much juice is left (in litres)? =
  25. 25.A tank is 2/3 full of water. Then water filling 5/9 of the tank is used. What fraction of the tank is full now? =
  26. 26.A tank is 5/6 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  27. 27.A tank is 7/10 full of water. Then water filling 3/5 of the tank is used. What fraction of the tank is full now? =
  28. 28.1/6 − 1/8 =
  29. 29.5/6 − 2/9 =
  30. 30.A bottle has 6/7 litre of juice. Kabir drinks 2/3 litre. How much juice is left (in litres)? =
  31. 31.A bottle has 5/6 litre of juice. Arjun drinks 4/5 litre. How much juice is left (in litres)? =
  32. 32.Aarav has a ribbon 5/6 m long and cuts off 4/9 m. How long is the ribbon now (in m)? =
  33. 33.A bottle has 3/4 litre of juice. Aarav drinks 2/3 litre. How much juice is left (in litres)? =
  34. 34.A tank is 7/10 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  35. 35.5/8 − 1/4 =
  36. 36.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? =
  37. 37.3/7 − 1/3 =
  38. 38.Vihaan has a ribbon 3/4 m long and cuts off 7/10 m. How long is the ribbon now (in m)? =
  39. 39.6/7 − 2/3 =
  40. 40.3/4 − 2/5 =

Answer key

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

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