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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 305 · 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 9/10 litre of juice. Diya drinks 2/5 litre. How much juice is left (in litres)? =
  2. 2.A tank is 1/2 full of water. Then water filling 2/7 of the tank is used. What fraction of the tank is full now? =
  3. 3.3/8 − 1/6 =
  4. 4.1/2 − 4/9 =
  5. 5.1/3 − 1/4 =
  6. 6.Tara has a ribbon 3/10 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  7. 7.1/2 − 1/3 =
  8. 8.6/7 − 1/4 =
  9. 9.Rohan has a ribbon 2/3 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  10. 10.3/5 − 1/10 =
  11. 11.A tank is 5/6 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  12. 12.5/9 − 1/6 =
  13. 13.A bottle has 2/9 litre of juice. Arjun drinks 1/6 litre. How much juice is left (in litres)? =
  14. 14.2/3 − 2/7 =
  15. 15.A bottle has 9/10 litre of juice. Kabir drinks 3/5 litre. How much juice is left (in litres)? =
  16. 16.7/10 − 1/3 =
  17. 17.A tank is 5/8 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  18. 18.Ishaan has a ribbon 2/3 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  19. 19.A bottle has 1/2 litre of juice. Vihaan drinks 1/8 litre. How much juice is left (in litres)? =
  20. 20.5/6 − 1/8 =
  21. 21.1/2 − 2/9 =
  22. 22.5/8 − 1/3 =
  23. 23.A bottle has 1/2 litre of juice. Sara drinks 2/5 litre. How much juice is left (in litres)? =
  24. 24.5/8 − 1/4 =
  25. 25.A tank is 6/7 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  26. 26.A bottle has 2/3 litre of juice. Sara drinks 1/7 litre. How much juice is left (in litres)? =
  27. 27.5/6 − 2/9 =
  28. 28.A bottle has 2/3 litre of juice. Aarav drinks 5/8 litre. How much juice is left (in litres)? =
  29. 29.A bottle has 1/2 litre of juice. Anaya drinks 3/8 litre. How much juice is left (in litres)? =
  30. 30.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? =
  31. 31.A tank is 2/7 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  32. 32.1/2 − 1/4 =
  33. 33.Rohan has a ribbon 5/8 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  34. 34.A tank is 3/8 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  35. 35.Aarav has a ribbon 2/5 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  36. 36.1/3 − 1/8 =
  37. 37.8/9 − 2/3 =
  38. 38.7/8 − 2/3 =
  39. 39.5/6 − 3/5 =
  40. 40.A tank is 3/4 full of water. Then water filling 4/7 of the tank is used. What fraction of the tank is full now? =

Answer key

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

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