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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 689 · 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. 1.5/8 − 1/2 =
  2. 2.A tank is 4/9 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  3. 3.A tank is 1/4 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  4. 4.A tank is 9/10 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 5/8 litre of juice. Vihaan drinks 1/4 litre. How much juice is left (in litres)? =
  6. 6.A tank is 9/10 full of water. Then water filling 2/5 of the tank is used. What fraction of the tank is full now? =
  7. 7.5/9 − 1/2 =
  8. 8.A tank is 6/7 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  9. 9.5/7 − 2/3 =
  10. 10.3/4 − 3/8 =
  11. 11.7/10 − 1/6 =
  12. 12.3/5 − 1/4 =
  13. 13.A tank is 5/7 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  14. 14.1/3 − 1/10 =
  15. 15.7/8 − 5/6 =
  16. 16.8/9 − 2/3 =
  17. 17.2/3 − 2/7 =
  18. 18.A bottle has 5/6 litre of juice. Rohan drinks 4/9 litre. How much juice is left (in litres)? =
  19. 19.A tank is 5/7 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  20. 20.A bottle has 1/3 litre of juice. Ishaan drinks 2/7 litre. How much juice is left (in litres)? =
  21. 21.A bottle has 2/7 litre of juice. Kabir drinks 1/4 litre. How much juice is left (in litres)? =
  22. 22.1/2 − 1/8 =
  23. 23.Meera has a ribbon 2/3 m long and cuts off 2/9 m. How long is the ribbon now (in m)? =
  24. 24.2/5 − 1/3 =
  25. 25.7/10 − 1/5 =
  26. 26.4/9 − 1/6 =
  27. 27.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? =
  28. 28.2/3 − 3/7 =
  29. 29.Riya has a ribbon 3/5 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  30. 30.A tank is 3/4 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  31. 31.9/10 − 2/5 =
  32. 32.A tank is 3/4 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  33. 33.8/9 − 5/6 =
  34. 34.Ishaan has a ribbon 1/2 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  35. 35.5/6 − 1/8 =
  36. 36.3/8 − 1/6 =
  37. 37.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? =
  38. 38.A bottle has 4/5 litre of juice. Diya drinks 1/10 litre. How much juice is left (in litres)? =
  39. 39.A bottle has 3/5 litre of juice. Kabir drinks 1/3 litre. How much juice is left (in litres)? =
  40. 40.8/9 − 1/2 =

Answer key

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

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