← Subtracting fractions: different denominators lesson New set →

Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 812 · 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 − 1/7 =
  2. 2.6/7 − 1/4 =
  3. 3.7/9 − 1/6 =
  4. 4.7/8 − 1/6 =
  5. 5.2/3 − 1/10 =
  6. 6.A bottle has 4/7 litre of juice. Rohan drinks 1/2 litre. How much juice is left (in litres)? =
  7. 7.A tank is 2/3 full of water. Then water filling 3/5 of the tank is used. What fraction of the tank is full now? =
  8. 8.9/10 − 2/3 =
  9. 9.Anaya has a ribbon 2/3 m long and cuts off 5/8 m. How long is the ribbon now (in m)? =
  10. 10.1/2 − 1/8 =
  11. 11.A tank is 3/4 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  12. 12.3/4 − 1/2 =
  13. 13.A bottle has 3/7 litre of juice. Meera drinks 1/4 litre. How much juice is left (in litres)? =
  14. 14.A bottle has 4/5 litre of juice. Anaya drinks 1/10 litre. How much juice is left (in litres)? =
  15. 15.4/5 − 1/2 =
  16. 16.Rohan has a ribbon 8/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  17. 17.1/6 − 1/10 =
  18. 18.A tank is 3/4 full of water. Then water filling 2/7 of the tank is used. What fraction of the tank is full now? =
  19. 19.A bottle has 5/6 litre of juice. Rohan drinks 2/9 litre. How much juice is left (in litres)? =
  20. 20.Vihaan has a ribbon 1/2 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  21. 21.7/9 − 2/3 =
  22. 22.5/8 − 1/6 =
  23. 23.1/2 − 3/8 =
  24. 24.1/4 − 1/5 =
  25. 25.Diya has a ribbon 7/10 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  26. 26.1/6 − 1/9 =
  27. 27.3/4 − 1/7 =
  28. 28.A bottle has 2/9 litre of juice. Kabir drinks 1/6 litre. How much juice is left (in litres)? =
  29. 29.8/9 − 2/3 =
  30. 30.A tank is 1/2 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  31. 31.A bottle has 5/6 litre of juice. Tara drinks 1/10 litre. How much juice is left (in litres)? =
  32. 32.A bottle has 7/10 litre of juice. Vihaan drinks 1/5 litre. How much juice is left (in litres)? =
  33. 33.A tank is 4/7 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  34. 34.A tank is 1/2 full of water. Then water filling 2/9 of the tank is used. What fraction of the tank is full now? =
  35. 35.Anaya has a ribbon 1/6 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  36. 36.3/4 − 1/8 =
  37. 37.A bottle has 2/3 litre of juice. Sara drinks 1/7 litre. How much juice is left (in litres)? =
  38. 38.A tank is 8/9 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  39. 39.3/7 − 1/3 =
  40. 40.4/5 − 3/10 =

Answer key

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

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