← Subtracting fractions: different denominators lesson New set →

Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 444 · 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. 1.1/3 − 2/7 =
  2. 2.5/8 − 1/4 =
  3. 3.1/2 − 1/10 =
  4. 4.A tank is 1/3 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  5. 5.4/5 − 1/6 =
  6. 6.A bottle has 1/4 litre of juice. Tara drinks 1/6 litre. How much juice is left (in litres)? =
  7. 7.A bottle has 4/5 litre of juice. Anaya drinks 1/2 litre. How much juice is left (in litres)? =
  8. 8.Ishaan has a ribbon 2/3 m long and cuts off 4/7 m. How long is the ribbon now (in m)? =
  9. 9.1/2 − 2/7 =
  10. 10.A bottle has 5/8 litre of juice. Aarav drinks 1/6 litre. How much juice is left (in litres)? =
  11. 11.2/5 − 3/10 =
  12. 12.A tank is 4/5 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  13. 13.1/4 − 1/8 =
  14. 14.5/6 − 7/9 =
  15. 15.A tank is 3/4 full of water. Then water filling 2/5 of the tank is used. What fraction of the tank is full now? =
  16. 16.1/4 − 1/10 =
  17. 17.5/8 − 1/3 =
  18. 18.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? =
  19. 19.7/10 − 1/5 =
  20. 20.3/10 − 1/6 =
  21. 21.8/9 − 5/6 =
  22. 22.Arjun has a ribbon 1/3 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  23. 23.3/7 − 1/3 =
  24. 24.6/7 − 2/3 =
  25. 25.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? =
  26. 26.A bottle has 3/5 litre of juice. Riya drinks 1/4 litre. How much juice is left (in litres)? =
  27. 27.4/7 − 1/4 =
  28. 28.2/3 − 1/6 =
  29. 29.A tank is 9/10 full of water. Then water filling 4/5 of the tank is used. What fraction of the tank is full now? =
  30. 30.2/3 − 4/7 =
  31. 31.A tank is 7/10 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  32. 32.3/5 − 1/10 =
  33. 33.A tank is 9/10 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  34. 34.1/2 − 3/8 =
  35. 35.A bottle has 8/9 litre of juice. Aarav drinks 1/2 litre. How much juice is left (in litres)? =
  36. 36.2/3 − 5/9 =
  37. 37.Sara has a ribbon 2/3 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  38. 38.3/4 − 2/7 =
  39. 39.Diya has a ribbon 5/6 m long and cuts off 2/9 m. How long is the ribbon now (in m)? =
  40. 40.A tank is 2/7 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =

Answer key

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

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