← Subtracting fractions: different denominators lesson New set →

Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 510 · 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.A tank is 3/4 full of water. Then water filling 1/7 of the tank is used. What fraction of the tank is full now? =
  2. 2.A bottle has 3/4 litre of juice. Meera drinks 5/7 litre. How much juice is left (in litres)? =
  3. 3.A bottle has 7/9 litre of juice. Arjun drinks 1/2 litre. How much juice is left (in litres)? =
  4. 4.A bottle has 3/5 litre of juice. Meera drinks 1/3 litre. How much juice is left (in litres)? =
  5. 5.Ishaan has a ribbon 5/6 m long and cuts off 7/10 m. How long is the ribbon now (in m)? =
  6. 6.1/2 − 1/3 =
  7. 7.A bottle has 5/7 litre of juice. Anaya drinks 2/3 litre. How much juice is left (in litres)? =
  8. 8.7/8 − 1/2 =
  9. 9.1/2 − 1/9 =
  10. 10.7/10 − 1/3 =
  11. 11.9/10 − 3/4 =
  12. 12.8/9 − 1/6 =
  13. 13.5/6 − 3/5 =
  14. 14.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? =
  15. 15.Diya has a ribbon 3/4 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  16. 16.A bottle has 1/2 litre of juice. Aarav drinks 4/9 litre. How much juice is left (in litres)? =
  17. 17.Vihaan has a ribbon 5/6 m long and cuts off 4/9 m. How long is the ribbon now (in m)? =
  18. 18.3/7 − 1/4 =
  19. 19.5/7 − 1/3 =
  20. 20.A bottle has 6/7 litre of juice. Tara drinks 2/3 litre. How much juice is left (in litres)? =
  21. 21.2/3 − 3/7 =
  22. 22.9/10 − 1/4 =
  23. 23.A bottle has 5/6 litre of juice. Arjun drinks 5/8 litre. How much juice is left (in litres)? =
  24. 24.3/4 − 1/8 =
  25. 25.1/2 − 1/6 =
  26. 26.3/4 − 5/7 =
  27. 27.5/7 − 1/4 =
  28. 28.Aarav has a ribbon 1/2 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  29. 29.A bottle has 3/4 litre of juice. Riya drinks 1/8 litre. How much juice is left (in litres)? =
  30. 30.9/10 − 1/6 =
  31. 31.4/5 − 2/3 =
  32. 32.9/10 − 5/6 =
  33. 33.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? =
  34. 34.3/4 − 1/7 =
  35. 35.5/6 − 1/9 =
  36. 36.2/3 − 1/7 =
  37. 37.A bottle has 5/9 litre of juice. Ishaan drinks 1/3 litre. How much juice is left (in litres)? =
  38. 38.A bottle has 1/3 litre of juice. Aarav drinks 1/8 litre. How much juice is left (in litres)? =
  39. 39.7/8 − 1/3 =
  40. 40.Arjun has a ribbon 7/8 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =

Answer key

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

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