← Subtracting fractions: different denominators lesson New set →

Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 727 · 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. 1.9/10 − 5/6 =
  2. 2.4/5 − 7/10 =
  3. 3.A tank is 8/9 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  4. 4.Diya has a ribbon 1/3 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  5. 5.4/5 − 3/4 =
  6. 6.A bottle has 1/2 litre of juice. Kabir drinks 1/4 litre. How much juice is left (in litres)? =
  7. 7.A tank is 4/5 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  8. 8.A tank is 2/3 full of water. Then water filling 3/7 of the tank is used. What fraction of the tank is full now? =
  9. 9.2/3 − 2/7 =
  10. 10.A tank is 8/9 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  11. 11.Tara has a ribbon 7/10 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  12. 12.A bottle has 1/3 litre of juice. Meera drinks 1/6 litre. How much juice is left (in litres)? =
  13. 13.A bottle has 3/5 litre of juice. Ishaan drinks 1/6 litre. How much juice is left (in litres)? =
  14. 14.5/9 − 1/6 =
  15. 15.7/9 − 1/6 =
  16. 16.8/9 − 2/3 =
  17. 17.1/2 − 2/9 =
  18. 18.Aarav has a ribbon 4/5 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  19. 19.7/10 − 1/6 =
  20. 20.2/5 − 1/10 =
  21. 21.2/3 − 3/7 =
  22. 22.3/7 − 1/4 =
  23. 23.A tank is 5/6 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  24. 24.5/8 − 1/4 =
  25. 25.5/6 − 1/8 =
  26. 26.A bottle has 2/7 litre of juice. Rohan drinks 1/4 litre. How much juice is left (in litres)? =
  27. 27.8/9 − 1/2 =
  28. 28.7/8 − 1/3 =
  29. 29.Riya has a ribbon 1/4 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  30. 30.2/5 − 1/4 =
  31. 31.2/3 − 3/10 =
  32. 32.9/10 − 1/2 =
  33. 33.A tank is 4/9 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  34. 34.5/8 − 1/6 =
  35. 35.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? =
  36. 36.5/6 − 1/5 =
  37. 37.A tank is 5/6 full of water. Then water filling 7/9 of the tank is used. What fraction of the tank is full now? =
  38. 38.6/7 − 2/3 =
  39. 39.A tank is 4/5 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  40. 40.2/3 − 1/6 =

Answer key

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

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