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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 76 · 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 5/9 litre of juice. Rohan drinks 1/3 litre. How much juice is left (in litres)? =
  2. 2.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? =
  3. 3.A bottle has 7/10 litre of juice. Tara drinks 2/3 litre. How much juice is left (in litres)? =
  4. 4.A bottle has 5/8 litre of juice. Rohan drinks 1/4 litre. How much juice is left (in litres)? =
  5. 5.1/4 − 1/7 =
  6. 6.1/2 − 1/7 =
  7. 7.7/10 − 2/3 =
  8. 8.1/3 − 2/7 =
  9. 9.3/4 − 1/7 =
  10. 10.A bottle has 3/4 litre of juice. Riya drinks 2/7 litre. How much juice is left (in litres)? =
  11. 11.Arjun has a ribbon 1/2 m long and cuts off 4/9 m. How long is the ribbon now (in m)? =
  12. 12.2/3 − 4/7 =
  13. 13.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? =
  14. 14.4/5 − 1/6 =
  15. 15.A bottle has 9/10 litre of juice. Aarav drinks 1/4 litre. How much juice is left (in litres)? =
  16. 16.2/5 − 1/10 =
  17. 17.Sara has a ribbon 2/3 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  18. 18.Riya has a ribbon 3/5 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  19. 19.A bottle has 5/9 litre of juice. Arjun drinks 1/3 litre. How much juice is left (in litres)? =
  20. 20.2/3 − 5/9 =
  21. 21.A bottle has 2/3 litre of juice. Kabir drinks 1/6 litre. How much juice is left (in litres)? =
  22. 22.A tank is 3/7 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  23. 23.Vihaan has a ribbon 3/10 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  24. 24.A bottle has 1/3 litre of juice. Rohan drinks 1/5 litre. How much juice is left (in litres)? =
  25. 25.8/9 − 2/3 =
  26. 26.A bottle has 7/10 litre of juice. Kabir drinks 3/5 litre. How much juice is left (in litres)? =
  27. 27.2/3 − 2/9 =
  28. 28.A tank is 1/3 full of water. Then water filling 2/9 of the tank is used. What fraction of the tank is full now? =
  29. 29.A tank is 1/3 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  30. 30.A bottle has 2/3 litre of juice. Kabir drinks 5/9 litre. How much juice is left (in litres)? =
  31. 31.5/6 − 1/8 =
  32. 32.1/3 − 1/5 =
  33. 33.7/10 − 1/6 =
  34. 34.4/7 − 1/3 =
  35. 35.3/4 − 3/7 =
  36. 36.3/5 − 3/10 =
  37. 37.A bottle has 4/5 litre of juice. Ishaan drinks 1/3 litre. How much juice is left (in litres)? =
  38. 38.2/3 − 1/9 =
  39. 39.Tara has a ribbon 9/10 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  40. 40.5/7 − 1/2 =

Answer key

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

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