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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 423 · 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. Vihaan drinks 1/2 litre. How much juice is left (in litres)? =
  2. 2.A bottle has 3/5 litre of juice. Vihaan drinks 1/4 litre. How much juice is left (in litres)? =
  3. 3.Meera has a ribbon 3/8 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  4. 4.7/10 − 1/3 =
  5. 5.A bottle has 4/7 litre of juice. Sara drinks 1/3 litre. How much juice is left (in litres)? =
  6. 6.Rohan has a ribbon 1/3 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  7. 7.A bottle has 7/8 litre of juice. Arjun drinks 3/4 litre. How much juice is left (in litres)? =
  8. 8.1/3 − 1/7 =
  9. 9.A bottle has 9/10 litre of juice. Aarav drinks 2/3 litre. How much juice is left (in litres)? =
  10. 10.Kabir has a ribbon 7/8 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  11. 11.1/2 − 1/3 =
  12. 12.A bottle has 8/9 litre of juice. Aarav drinks 1/6 litre. How much juice is left (in litres)? =
  13. 13.Vihaan has a ribbon 3/4 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  14. 14.A bottle has 2/7 litre of juice. Diya drinks 1/4 litre. How much juice is left (in litres)? =
  15. 15.1/6 − 1/10 =
  16. 16.A bottle has 7/10 litre of juice. Meera drinks 1/3 litre. How much juice is left (in litres)? =
  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.A bottle has 3/4 litre of juice. Ishaan drinks 5/7 litre. How much juice is left (in litres)? =
  19. 19.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? =
  20. 20.A bottle has 5/6 litre of juice. Rohan drinks 1/4 litre. How much juice is left (in litres)? =
  21. 21.3/4 − 3/7 =
  22. 22.1/2 − 1/5 =
  23. 23.A bottle has 2/3 litre of juice. Anaya drinks 1/8 litre. How much juice is left (in litres)? =
  24. 24.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? =
  25. 25.2/3 − 1/8 =
  26. 26.1/6 − 1/8 =
  27. 27.A tank is 3/4 full of water. Then water filling 5/7 of the tank is used. What fraction of the tank is full now? =
  28. 28.5/6 − 7/9 =
  29. 29.1/4 − 1/7 =
  30. 30.A bottle has 5/6 litre of juice. Ishaan drinks 1/5 litre. How much juice is left (in litres)? =
  31. 31.Anaya has a ribbon 7/10 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  32. 32.1/2 − 1/10 =
  33. 33.8/9 − 1/3 =
  34. 34.3/4 − 1/8 =
  35. 35.4/5 − 1/3 =
  36. 36.Meera has a ribbon 3/4 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  37. 37.1/2 − 1/7 =
  38. 38.3/5 − 1/10 =
  39. 39.Riya has a ribbon 3/5 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  40. 40.7/9 − 1/2 =

Answer key

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

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