← Subtracting fractions: different denominators lesson New set →

Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 289 · 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.Kabir has a ribbon 3/5 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  2. 2.A tank is 3/4 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  3. 3.1/4 − 1/7 =
  4. 4.A tank is 7/8 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  5. 5.A bottle has 4/9 litre of juice. Ishaan drinks 1/3 litre. How much juice is left (in litres)? =
  6. 6.1/3 − 2/7 =
  7. 7.3/5 − 1/4 =
  8. 8.7/8 − 1/2 =
  9. 9.1/2 − 2/9 =
  10. 10.Sara has a ribbon 1/3 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  11. 11.A bottle has 1/3 litre of juice. Kabir drinks 1/7 litre. How much juice is left (in litres)? =
  12. 12.7/8 − 3/4 =
  13. 13.2/3 − 3/8 =
  14. 14.Kabir has a ribbon 7/8 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  15. 15.7/8 − 5/6 =
  16. 16.Rohan has a ribbon 2/7 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  17. 17.9/10 − 1/4 =
  18. 18.Diya has a ribbon 3/4 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  19. 19.Rohan has a ribbon 4/5 m long and cuts off 3/4 m. How long is the ribbon now (in m)? =
  20. 20.5/9 − 1/2 =
  21. 21.Rohan has a ribbon 3/4 m long and cuts off 5/7 m. How long is the ribbon now (in m)? =
  22. 22.A bottle has 1/4 litre of juice. Ishaan drinks 1/7 litre. How much juice is left (in litres)? =
  23. 23.A bottle has 5/9 litre of juice. Tara drinks 1/6 litre. How much juice is left (in litres)? =
  24. 24.1/2 − 1/9 =
  25. 25.8/9 − 1/2 =
  26. 26.9/10 − 4/5 =
  27. 27.A bottle has 3/8 litre of juice. Sara drinks 1/4 litre. How much juice is left (in litres)? =
  28. 28.5/9 − 1/3 =
  29. 29.A tank is 3/4 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  30. 30.2/3 − 1/5 =
  31. 31.Riya has a ribbon 3/4 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  32. 32.3/10 − 1/5 =
  33. 33.A bottle has 1/5 litre of juice. Diya drinks 1/6 litre. How much juice is left (in litres)? =
  34. 34.A bottle has 2/5 litre of juice. Aarav drinks 1/3 litre. How much juice is left (in litres)? =
  35. 35.A bottle has 1/2 litre of juice. Kabir drinks 1/8 litre. How much juice is left (in litres)? =
  36. 36.5/6 − 5/9 =
  37. 37.1/2 − 1/5 =
  38. 38.7/9 − 1/6 =
  39. 39.1/2 − 1/6 =
  40. 40.A tank is 3/4 full of water. Then water filling 3/7 of the tank is used. What fraction of the tank is full now? =

Answer key

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

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