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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 79 · 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.A bottle has 5/6 litre of juice. Anaya drinks 4/9 litre. How much juice is left (in litres)? =
  2. 2.Riya has a ribbon 7/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  3. 3.A tank is 5/8 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  4. 4.5/9 − 1/6 =
  5. 5.5/6 − 5/8 =
  6. 6.1/3 − 1/7 =
  7. 7.A tank is 3/4 full of water. Then water filling 5/7 of the tank is used. What fraction of the tank is full now? =
  8. 8.A bottle has 3/5 litre of juice. Anaya drinks 1/3 litre. How much juice is left (in litres)? =
  9. 9.A bottle has 7/10 litre of juice. Kabir drinks 1/3 litre. How much juice is left (in litres)? =
  10. 10.3/4 − 1/10 =
  11. 11.2/5 − 1/6 =
  12. 12.Arjun has a ribbon 3/7 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  13. 13.A tank is 3/4 full of water. Then water filling 3/7 of the tank is used. What fraction of the tank is full now? =
  14. 14.3/5 − 1/6 =
  15. 15.1/2 − 2/5 =
  16. 16.A tank is 4/5 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  17. 17.1/3 − 1/5 =
  18. 18.2/3 − 4/7 =
  19. 19.3/4 − 2/7 =
  20. 20.Arjun has a ribbon 2/5 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  21. 21.A tank is 2/5 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  22. 22.7/9 − 1/3 =
  23. 23.5/7 − 2/3 =
  24. 24.5/8 − 1/2 =
  25. 25.1/2 − 3/8 =
  26. 26.A bottle has 2/3 litre of juice. Rohan drinks 3/7 litre. How much juice is left (in litres)? =
  27. 27.A tank is 2/3 full of water. Then water filling 2/7 of the tank is used. What fraction of the tank is full now? =
  28. 28.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? =
  29. 29.3/7 − 1/4 =
  30. 30.3/4 − 2/5 =
  31. 31.A tank is 2/7 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  32. 32.3/4 − 1/5 =
  33. 33.A tank is 5/6 full of water. Then water filling 7/9 of the tank is used. What fraction of the tank is full now? =
  34. 34.3/4 − 1/3 =
  35. 35.A tank is 5/6 full of water. Then water filling 4/5 of the tank is used. What fraction of the tank is full now? =
  36. 36.3/7 − 1/3 =
  37. 37.A bottle has 4/5 litre of juice. Riya drinks 1/2 litre. How much juice is left (in litres)? =
  38. 38.Kabir has a ribbon 4/5 m long and cuts off 7/10 m. How long is the ribbon now (in m)? =
  39. 39.A bottle has 1/3 litre of juice. Vihaan drinks 2/9 litre. How much juice is left (in litres)? =
  40. 40.Anaya has a ribbon 3/4 m long and cuts off 3/7 m. How long is the ribbon now (in m)? =

Answer key

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

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