← Subtracting fractions: different denominators lesson New set →

Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 255 · 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. 1.1/2 − 3/7 =
  2. 2.1/6 − 1/10 =
  3. 3.Diya has a ribbon 8/9 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  4. 4.5/6 − 1/2 =
  5. 5.5/7 − 1/3 =
  6. 6.7/9 − 1/6 =
  7. 7.Sara has a ribbon 5/6 m long and cuts off 5/8 m. How long is the ribbon now (in m)? =
  8. 8.A tank is 1/3 full of water. Then water filling 2/7 of the tank is used. What fraction of the tank is full now? =
  9. 9.3/4 − 2/5 =
  10. 10.8/9 − 2/3 =
  11. 11.A tank is 1/2 full of water. Then water filling 3/7 of the tank is used. What fraction of the tank is full now? =
  12. 12.A bottle has 2/3 litre of juice. Arjun drinks 4/9 litre. How much juice is left (in litres)? =
  13. 13.7/8 − 1/4 =
  14. 14.A bottle has 3/4 litre of juice. Diya drinks 7/10 litre. How much juice is left (in litres)? =
  15. 15.2/3 − 5/9 =
  16. 16.A bottle has 6/7 litre of juice. Meera drinks 1/2 litre. How much juice is left (in litres)? =
  17. 17.5/8 − 1/3 =
  18. 18.2/3 − 1/9 =
  19. 19.3/5 − 1/3 =
  20. 20.A tank is 3/4 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  21. 21.A tank is 5/9 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  22. 22.4/5 − 1/2 =
  23. 23.A bottle has 1/3 litre of juice. Tara drinks 1/9 litre. How much juice is left (in litres)? =
  24. 24.5/6 − 3/5 =
  25. 25.1/3 − 1/9 =
  26. 26.A bottle has 2/3 litre of juice. Sara drinks 1/7 litre. How much juice is left (in litres)? =
  27. 27.A bottle has 4/5 litre of juice. Riya drinks 3/10 litre. How much juice is left (in litres)? =
  28. 28.A bottle has 7/8 litre of juice. Kabir drinks 1/4 litre. How much juice is left (in litres)? =
  29. 29.A tank is 5/6 full of water. Then water filling 1/9 of the tank is used. What fraction of the tank is full now? =
  30. 30.Aarav has a ribbon 3/5 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  31. 31.A tank is 8/9 full of water. Then water filling 5/6 of the tank is used. What fraction of the tank is full now? =
  32. 32.3/4 − 4/7 =
  33. 33.9/10 − 3/4 =
  34. 34.A bottle has 3/4 litre of juice. Aarav drinks 5/7 litre. How much juice is left (in litres)? =
  35. 35.3/7 − 1/3 =
  36. 36.3/4 − 5/8 =
  37. 37.A bottle has 1/4 litre of juice. Meera drinks 1/5 litre. How much juice is left (in litres)? =
  38. 38.A tank is 7/9 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  39. 39.5/6 − 1/9 =
  40. 40.1/4 − 1/8 =

Answer key

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

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