← Subtracting fractions: different denominators lesson New set →

Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 660 · 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. 1.5/6 − 3/4 =
  2. 2.5/8 − 1/3 =
  3. 3.A tank is 3/8 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  4. 4.Meera has a ribbon 5/6 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  5. 5.5/6 − 7/10 =
  6. 6.A tank is 1/3 full of water. Then water filling 2/9 of the tank is used. What fraction of the tank is full now? =
  7. 7.A bottle has 9/10 litre of juice. Sara drinks 3/5 litre. How much juice is left (in litres)? =
  8. 8.A tank is 5/6 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  9. 9.3/7 − 1/3 =
  10. 10.1/4 − 1/6 =
  11. 11.5/7 − 2/3 =
  12. 12.1/2 − 2/9 =
  13. 13.1/2 − 1/8 =
  14. 14.8/9 − 1/6 =
  15. 15.Diya has a ribbon 5/6 m long and cuts off 3/8 m. How long is the ribbon now (in m)? =
  16. 16.A bottle has 2/3 litre of juice. Aarav drinks 3/5 litre. How much juice is left (in litres)? =
  17. 17.8/9 − 5/6 =
  18. 18.A tank is 1/3 full of water. Then water filling 1/7 of the tank is used. What fraction of the tank is full now? =
  19. 19.7/10 − 2/5 =
  20. 20.3/4 − 3/8 =
  21. 21.A bottle has 5/7 litre of juice. Meera drinks 1/3 litre. How much juice is left (in litres)? =
  22. 22.3/4 − 5/7 =
  23. 23.7/10 − 1/2 =
  24. 24.4/9 − 1/3 =
  25. 25.Anaya has a ribbon 7/8 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  26. 26.2/3 − 2/9 =
  27. 27.A bottle has 3/10 litre of juice. Rohan drinks 1/6 litre. How much juice is left (in litres)? =
  28. 28.A bottle has 6/7 litre of juice. Vihaan drinks 3/4 litre. How much juice is left (in litres)? =
  29. 29.1/2 − 2/7 =
  30. 30.7/9 − 1/2 =
  31. 31.1/6 − 1/9 =
  32. 32.A tank is 5/8 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  33. 33.3/8 − 1/4 =
  34. 34.2/3 − 5/8 =
  35. 35.A bottle has 7/9 litre of juice. Meera drinks 2/3 litre. How much juice is left (in litres)? =
  36. 36.A tank is 7/9 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  37. 37.A bottle has 8/9 litre of juice. Aarav drinks 1/2 litre. How much juice is left (in litres)? =
  38. 38.2/3 − 1/9 =
  39. 39.1/2 − 3/8 =
  40. 40.3/5 − 1/4 =

Answer key

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

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