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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 147 · 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 7/10 litre of juice. Arjun drinks 3/5 litre. How much juice is left (in litres)? =
  2. 2.4/5 − 7/10 =
  3. 3.A bottle has 5/6 litre of juice. Ishaan drinks 7/10 litre. How much juice is left (in litres)? =
  4. 4.A bottle has 1/4 litre of juice. Diya drinks 1/5 litre. How much juice is left (in litres)? =
  5. 5.6/7 − 3/4 =
  6. 6.A tank is 2/3 full of water. Then water filling 2/9 of the tank is used. What fraction of the tank is full now? =
  7. 7.Meera has a ribbon 2/3 m long and cuts off 4/9 m. How long is the ribbon now (in m)? =
  8. 8.A tank is 1/2 full of water. Then water filling 3/8 of the tank is used. What fraction of the tank is full now? =
  9. 9.A tank is 8/9 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  10. 10.2/3 − 3/5 =
  11. 11.A bottle has 1/2 litre of juice. Arjun drinks 3/10 litre. How much juice is left (in litres)? =
  12. 12.1/3 − 1/9 =
  13. 13.1/5 − 1/6 =
  14. 14.A bottle has 5/6 litre of juice. Tara drinks 1/8 litre. How much juice is left (in litres)? =
  15. 15.A bottle has 3/4 litre of juice. Arjun drinks 2/7 litre. How much juice is left (in litres)? =
  16. 16.2/3 − 1/8 =
  17. 17.A bottle has 1/2 litre of juice. Meera drinks 3/8 litre. How much juice is left (in litres)? =
  18. 18.2/9 − 1/6 =
  19. 19.A bottle has 9/10 litre of juice. Diya drinks 1/2 litre. How much juice is left (in litres)? =
  20. 20.Rohan has a ribbon 5/6 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  21. 21.7/9 − 1/6 =
  22. 22.Ishaan has a ribbon 2/3 m long and cuts off 4/9 m. How long is the ribbon now (in m)? =
  23. 23.6/7 − 2/3 =
  24. 24.A tank is 2/3 full of water. Then water filling 1/7 of the tank is used. What fraction of the tank is full now? =
  25. 25.Vihaan has a ribbon 3/4 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  26. 26.1/6 − 1/10 =
  27. 27.5/7 − 1/3 =
  28. 28.A tank is 7/8 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  29. 29.Kabir has a ribbon 5/6 m long and cuts off 3/4 m. How long is the ribbon now (in m)? =
  30. 30.Kabir has a ribbon 1/5 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  31. 31.2/3 − 3/10 =
  32. 32.7/8 − 1/4 =
  33. 33.5/8 − 1/2 =
  34. 34.A bottle has 2/3 litre of juice. Ishaan drinks 1/4 litre. How much juice is left (in litres)? =
  35. 35.3/4 − 5/7 =
  36. 36.A bottle has 5/6 litre of juice. Diya drinks 4/9 litre. How much juice is left (in litres)? =
  37. 37.7/8 − 3/4 =
  38. 38.7/8 − 1/3 =
  39. 39.Sara has a ribbon 5/6 m long and cuts off 7/10 m. How long is the ribbon now (in m)? =
  40. 40.5/6 − 4/5 =

Answer key

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

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