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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 182 · 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 5/6 of the tank is used. What fraction of the tank is full now? =
  2. 2.3/5 − 3/10 =
  3. 3.Anaya has a ribbon 1/2 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  4. 4.Kabir has a ribbon 5/7 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  5. 5.A tank is 3/5 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  6. 6.A tank is 3/4 full of water. Then water filling 1/7 of the tank is used. What fraction of the tank is full now? =
  7. 7.A bottle has 3/5 litre of juice. Diya drinks 1/4 litre. How much juice is left (in litres)? =
  8. 8.A bottle has 3/5 litre of juice. Meera drinks 1/10 litre. How much juice is left (in litres)? =
  9. 9.2/3 − 3/7 =
  10. 10.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? =
  11. 11.A bottle has 2/7 litre of juice. Anaya drinks 1/4 litre. How much juice is left (in litres)? =
  12. 12.5/6 − 3/10 =
  13. 13.4/5 − 7/10 =
  14. 14.7/10 − 2/5 =
  15. 15.A tank is 2/3 full of water. Then water filling 3/7 of the tank is used. What fraction of the tank is full now? =
  16. 16.5/9 − 1/3 =
  17. 17.A tank is 9/10 full of water. Then water filling 3/5 of the tank is used. What fraction of the tank is full now? =
  18. 18.3/8 − 1/6 =
  19. 19.Diya has a ribbon 8/9 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  20. 20.A bottle has 5/6 litre of juice. Ishaan drinks 1/3 litre. How much juice is left (in litres)? =
  21. 21.A tank is 9/10 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  22. 22.A tank is 5/7 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  23. 23.7/10 − 1/2 =
  24. 24.3/4 − 1/8 =
  25. 25.A bottle has 1/3 litre of juice. Vihaan drinks 3/10 litre. How much juice is left (in litres)? =
  26. 26.A tank is 7/8 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  27. 27.4/9 − 1/3 =
  28. 28.A tank is 9/10 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  29. 29.A bottle has 1/4 litre of juice. Tara drinks 1/6 litre. How much juice is left (in litres)? =
  30. 30.3/4 − 3/8 =
  31. 31.A bottle has 2/3 litre of juice. Tara drinks 1/8 litre. How much juice is left (in litres)? =
  32. 32.1/3 − 1/7 =
  33. 33.4/7 − 1/3 =
  34. 34.7/9 − 1/6 =
  35. 35.Tara has a ribbon 1/2 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  36. 36.Riya has a ribbon 5/6 m long and cuts off 7/10 m. How long is the ribbon now (in m)? =
  37. 37.Vihaan has a ribbon 1/2 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  38. 38.A bottle has 7/8 litre of juice. Sara drinks 1/4 litre. How much juice is left (in litres)? =
  39. 39.2/3 − 5/9 =
  40. 40.3/7 − 1/3 =

Answer key

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

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