← Subtracting fractions: different denominators lesson New set →

Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 95 · 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. 1.2/3 − 1/5 =
  2. 2.5/6 − 5/9 =
  3. 3.1/2 − 1/8 =
  4. 4.1/2 − 1/9 =
  5. 5.A bottle has 9/10 litre of juice. Kabir drinks 1/6 litre. How much juice is left (in litres)? =
  6. 6.A bottle has 5/8 litre of juice. Anaya drinks 1/4 litre. How much juice is left (in litres)? =
  7. 7.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? =
  8. 8.A tank is 4/5 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  9. 9.A bottle has 3/4 litre of juice. Kabir drinks 5/7 litre. How much juice is left (in litres)? =
  10. 10.Anaya has a ribbon 1/3 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  11. 11.A tank is 1/2 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  12. 12.A tank is 7/9 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  13. 13.A tank is 1/4 full of water. Then water filling 1/7 of the tank is used. What fraction of the tank is full now? =
  14. 14.A bottle has 5/6 litre of juice. Rohan drinks 1/8 litre. How much juice is left (in litres)? =
  15. 15.3/4 − 2/5 =
  16. 16.Anaya has a ribbon 4/5 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  17. 17.3/4 − 1/6 =
  18. 18.A bottle has 6/7 litre of juice. Tara drinks 1/3 litre. How much juice is left (in litres)? =
  19. 19.3/5 − 1/10 =
  20. 20.Kabir has a ribbon 5/9 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  21. 21.5/9 − 1/2 =
  22. 22.9/10 − 1/3 =
  23. 23.2/5 − 1/4 =
  24. 24.Ishaan has a ribbon 1/3 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  25. 25.2/5 − 1/3 =
  26. 26.A tank is 1/2 full of water. Then water filling 2/7 of the tank is used. What fraction of the tank is full now? =
  27. 27.8/9 − 5/6 =
  28. 28.A bottle has 4/5 litre of juice. Aarav drinks 1/2 litre. How much juice is left (in litres)? =
  29. 29.A tank is 5/6 full of water. Then water filling 3/4 of the tank is used. What fraction of the tank is full now? =
  30. 30.A tank is 3/4 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  31. 31.Anaya has a ribbon 5/9 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  32. 32.A bottle has 2/3 litre of juice. Ishaan drinks 1/9 litre. How much juice is left (in litres)? =
  33. 33.A bottle has 5/6 litre of juice. Ishaan drinks 2/5 litre. How much juice is left (in litres)? =
  34. 34.1/2 − 3/10 =
  35. 35.2/3 − 1/7 =
  36. 36.A bottle has 4/7 litre of juice. Sara drinks 1/2 litre. How much juice is left (in litres)? =
  37. 37.1/6 − 1/9 =
  38. 38.A bottle has 3/4 litre of juice. Ishaan drinks 3/5 litre. How much juice is left (in litres)? =
  39. 39.A bottle has 7/10 litre of juice. Kabir drinks 3/5 litre. How much juice is left (in litres)? =
  40. 40.7/10 − 1/6 =

Answer key

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

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