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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 400 · 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 3/5 litre of juice. Sara drinks 1/10 litre. How much juice is left (in litres)? =
  2. 2.1/2 − 1/4 =
  3. 3.1/3 − 2/7 =
  4. 4.2/3 − 4/7 =
  5. 5.5/6 − 5/9 =
  6. 6.A tank is 2/3 full of water. Then water filling 4/7 of the tank is used. What fraction of the tank is full now? =
  7. 7.A tank is 4/5 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  8. 8.1/2 − 2/7 =
  9. 9.A bottle has 4/5 litre of juice. Anaya drinks 2/3 litre. How much juice is left (in litres)? =
  10. 10.3/8 − 1/3 =
  11. 11.A bottle has 1/2 litre of juice. Riya drinks 2/5 litre. How much juice is left (in litres)? =
  12. 12.5/7 − 1/2 =
  13. 13.Ishaan has a ribbon 2/3 m long and cuts off 4/9 m. How long is the ribbon now (in m)? =
  14. 14.Sara has a ribbon 2/3 m long and cuts off 5/9 m. How long is the ribbon now (in m)? =
  15. 15.A bottle has 4/7 litre of juice. Arjun drinks 1/4 litre. How much juice is left (in litres)? =
  16. 16.A bottle has 1/4 litre of juice. Vihaan drinks 1/8 litre. How much juice is left (in litres)? =
  17. 17.A tank is 2/5 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  18. 18.Aarav has a ribbon 3/4 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  19. 19.A bottle has 3/4 litre of juice. Arjun drinks 5/7 litre. How much juice is left (in litres)? =
  20. 20.A bottle has 5/6 litre of juice. Aarav drinks 3/10 litre. How much juice is left (in litres)? =
  21. 21.9/10 − 3/5 =
  22. 22.A tank is 2/3 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  23. 23.Kabir has a ribbon 3/5 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  24. 24.7/10 − 1/5 =
  25. 25.4/9 − 1/3 =
  26. 26.A tank is 2/3 full of water. Then water filling 2/5 of the tank is used. What fraction of the tank is full now? =
  27. 27.1/4 − 1/8 =
  28. 28.A tank is 1/6 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  29. 29.2/3 − 1/8 =
  30. 30.2/3 − 4/9 =
  31. 31.A tank is 7/10 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  32. 32.2/3 − 5/9 =
  33. 33.A bottle has 5/6 litre of juice. Sara drinks 5/9 litre. How much juice is left (in litres)? =
  34. 34.Riya has a ribbon 1/6 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  35. 35.1/4 − 1/5 =
  36. 36.4/5 − 1/10 =
  37. 37.7/8 − 2/3 =
  38. 38.Kabir has a ribbon 3/5 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  39. 39.5/9 − 1/6 =
  40. 40.A bottle has 1/4 litre of juice. Kabir drinks 1/5 litre. How much juice is left (in litres)? =

Answer key

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

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