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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 693 · 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. 1.1/3 − 1/10 =
  2. 2.5/6 − 4/9 =
  3. 3.A tank is 2/5 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 1/2 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  5. 5.7/9 − 1/6 =
  6. 6.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? =
  7. 7.3/4 − 3/5 =
  8. 8.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? =
  9. 9.A bottle has 1/4 litre of juice. Meera drinks 1/5 litre. How much juice is left (in litres)? =
  10. 10.A tank is 4/9 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  11. 11.A bottle has 4/9 litre of juice. Aarav drinks 1/6 litre. How much juice is left (in litres)? =
  12. 12.A tank is 3/4 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  13. 13.A tank is 6/7 full of water. Then water filling 3/4 of the tank is used. What fraction of the tank is full now? =
  14. 14.3/8 − 1/6 =
  15. 15.1/2 − 3/7 =
  16. 16.A tank is 8/9 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  17. 17.1/2 − 3/8 =
  18. 18.2/3 − 3/5 =
  19. 19.5/6 − 3/10 =
  20. 20.Aarav has a ribbon 2/3 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  21. 21.A tank is 9/10 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  22. 22.4/7 − 1/2 =
  23. 23.Rohan has a ribbon 1/2 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  24. 24.5/6 − 5/8 =
  25. 25.7/10 − 3/5 =
  26. 26.5/6 − 2/9 =
  27. 27.1/5 − 1/6 =
  28. 28.Kabir has a ribbon 1/2 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  29. 29.A bottle has 1/3 litre of juice. Anaya drinks 1/10 litre. How much juice is left (in litres)? =
  30. 30.A bottle has 1/4 litre of juice. Arjun drinks 1/5 litre. How much juice is left (in litres)? =
  31. 31.1/3 − 1/7 =
  32. 32.A tank is 1/4 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  33. 33.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? =
  34. 34.3/4 − 3/10 =
  35. 35.4/9 − 1/3 =
  36. 36.A tank is 2/3 full of water. Then water filling 3/8 of the tank is used. What fraction of the tank is full now? =
  37. 37.7/9 − 1/3 =
  38. 38.Kabir has a ribbon 4/5 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  39. 39.A bottle has 4/5 litre of juice. Meera drinks 3/4 litre. How much juice is left (in litres)? =
  40. 40.3/8 − 1/3 =

Answer key

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

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