← Subtracting fractions: different denominators lesson New set →

Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 192 · 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. 1.1/2 − 4/9 =
  2. 2.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? =
  3. 3.1/4 − 1/6 =
  4. 4.Aarav has a ribbon 1/2 m long and cuts off 3/7 m. How long is the ribbon now (in m)? =
  5. 5.6/7 − 3/4 =
  6. 6.5/9 − 1/6 =
  7. 7.1/5 − 1/10 =
  8. 8.A tank is 7/9 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  9. 9.3/4 − 3/10 =
  10. 10.7/10 − 2/5 =
  11. 11.Arjun has a ribbon 2/3 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  12. 12.A tank is 2/3 full of water. Then water filling 2/9 of the tank is used. What fraction of the tank is full now? =
  13. 13.A bottle has 7/8 litre of juice. Vihaan drinks 1/6 litre. How much juice is left (in litres)? =
  14. 14.A bottle has 3/4 litre of juice. Meera drinks 4/7 litre. How much juice is left (in litres)? =
  15. 15.3/5 − 1/10 =
  16. 16.6/7 − 2/3 =
  17. 17.Tara has a ribbon 7/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  18. 18.7/9 − 1/6 =
  19. 19.1/2 − 2/9 =
  20. 20.A bottle has 9/10 litre of juice. Aarav drinks 3/5 litre. How much juice is left (in litres)? =
  21. 21.4/5 − 3/10 =
  22. 22.1/3 − 1/9 =
  23. 23.2/3 − 5/8 =
  24. 24.A tank is 5/6 full of water. Then water filling 2/9 of the tank is used. What fraction of the tank is full now? =
  25. 25.A bottle has 3/4 litre of juice. Aarav drinks 5/7 litre. How much juice is left (in litres)? =
  26. 26.5/9 − 1/3 =
  27. 27.1/2 − 3/7 =
  28. 28.3/4 − 2/5 =
  29. 29.A tank is 2/3 full of water. Then water filling 4/9 of the tank is used. What fraction of the tank is full now? =
  30. 30.A bottle has 5/6 litre of juice. Kabir drinks 7/10 litre. How much juice is left (in litres)? =
  31. 31.A bottle has 1/3 litre of juice. Tara drinks 2/7 litre. How much juice is left (in litres)? =
  32. 32.5/6 − 2/5 =
  33. 33.4/7 − 1/2 =
  34. 34.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? =
  35. 35.9/10 − 1/6 =
  36. 36.Diya has a ribbon 7/10 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  37. 37.A tank is 7/10 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  38. 38.A bottle has 7/8 litre of juice. Ishaan drinks 1/2 litre. How much juice is left (in litres)? =
  39. 39.9/10 − 4/5 =
  40. 40.1/3 − 2/7 =

Answer key

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

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