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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 509 · 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. 1.3/5 − 1/10 =
  2. 2.A bottle has 9/10 litre of juice. Aarav drinks 3/4 litre. How much juice is left (in litres)? =
  3. 3.Vihaan has a ribbon 2/3 m long and cuts off 2/9 m. How long is the ribbon now (in m)? =
  4. 4.A bottle has 9/10 litre of juice. Anaya drinks 5/6 litre. How much juice is left (in litres)? =
  5. 5.A bottle has 7/8 litre of juice. Diya drinks 1/4 litre. How much juice is left (in litres)? =
  6. 6.A bottle has 5/7 litre of juice. Meera drinks 1/3 litre. How much juice is left (in litres)? =
  7. 7.A tank is 5/7 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  8. 8.5/8 − 1/4 =
  9. 9.3/5 − 1/2 =
  10. 10.A tank is 7/8 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  11. 11.9/10 − 5/6 =
  12. 12.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? =
  13. 13.A tank is 1/3 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  14. 14.7/10 − 1/6 =
  15. 15.5/9 − 1/3 =
  16. 16.A tank is 5/6 full of water. Then water filling 3/5 of the tank is used. What fraction of the tank is full now? =
  17. 17.4/7 − 1/4 =
  18. 18.1/6 − 1/8 =
  19. 19.7/9 − 1/2 =
  20. 20.Arjun has a ribbon 1/2 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  21. 21.Riya has a ribbon 5/6 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  22. 22.A tank is 2/3 full of water. Then water filling 2/5 of the tank is used. What fraction of the tank is full now? =
  23. 23.6/7 − 2/3 =
  24. 24.A tank is 9/10 full of water. Then water filling 4/5 of the tank is used. What fraction of the tank is full now? =
  25. 25.2/3 − 1/2 =
  26. 26.6/7 − 1/3 =
  27. 27.Ishaan has a ribbon 3/4 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  28. 28.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? =
  29. 29.5/6 − 1/10 =
  30. 30.7/9 − 2/3 =
  31. 31.A bottle has 4/5 litre of juice. Tara drinks 1/4 litre. How much juice is left (in litres)? =
  32. 32.A bottle has 1/4 litre of juice. Ishaan drinks 1/8 litre. How much juice is left (in litres)? =
  33. 33.A tank is 5/6 full of water. Then water filling 5/9 of the tank is used. What fraction of the tank is full now? =
  34. 34.2/7 − 1/4 =
  35. 35.2/3 − 1/4 =
  36. 36.A bottle has 4/9 litre of juice. Kabir drinks 1/3 litre. How much juice is left (in litres)? =
  37. 37.A bottle has 7/10 litre of juice. Tara drinks 2/5 litre. How much juice is left (in litres)? =
  38. 38.A tank is 2/3 full of water. Then water filling 5/8 of the tank is used. What fraction of the tank is full now? =
  39. 39.A tank is 1/5 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  40. 40.3/7 − 1/4 =

Answer key

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

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