← Subtracting fractions: different denominators lesson New set →

Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 326 · 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. 1.3/10 − 1/5 =
  2. 2.3/4 − 1/6 =
  3. 3.4/5 − 3/4 =
  4. 4.1/2 − 1/3 =
  5. 5.A bottle has 1/3 litre of juice. Kabir drinks 2/7 litre. How much juice is left (in litres)? =
  6. 6.6/7 − 1/4 =
  7. 7.A tank is 7/9 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  8. 8.5/9 − 1/2 =
  9. 9.1/3 − 1/7 =
  10. 10.3/4 − 4/7 =
  11. 11.A tank is 5/7 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  12. 12.4/9 − 1/6 =
  13. 13.3/8 − 1/6 =
  14. 14.3/4 − 1/2 =
  15. 15.A tank is 3/7 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  16. 16.3/7 − 1/3 =
  17. 17.4/5 − 7/10 =
  18. 18.A bottle has 3/5 litre of juice. Kabir drinks 1/3 litre. How much juice is left (in litres)? =
  19. 19.Aarav has a ribbon 7/10 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  20. 20.A bottle has 7/8 litre of juice. Ishaan drinks 3/4 litre. How much juice is left (in litres)? =
  21. 21.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? =
  22. 22.A tank is 6/7 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  23. 23.8/9 − 2/3 =
  24. 24.2/3 − 2/5 =
  25. 25.1/2 − 3/7 =
  26. 26.A tank is 8/9 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  27. 27.Riya has a ribbon 5/6 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  28. 28.A bottle has 6/7 litre of juice. Kabir drinks 1/3 litre. How much juice is left (in litres)? =
  29. 29.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? =
  30. 30.Tara has a ribbon 3/8 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  31. 31.3/4 − 2/7 =
  32. 32.3/4 − 3/10 =
  33. 33.A tank is 1/2 full of water. Then water filling 2/9 of the tank is used. What fraction of the tank is full now? =
  34. 34.A tank is 1/4 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  35. 35.1/2 − 4/9 =
  36. 36.Anaya has a ribbon 2/3 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  37. 37.A bottle has 5/6 litre of juice. Kabir drinks 3/5 litre. How much juice is left (in litres)? =
  38. 38.5/6 − 2/9 =
  39. 39.1/3 − 1/8 =
  40. 40.1/6 − 1/9 =

Answer key

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

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