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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 956 · 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 tank is 5/6 full of water. Then water filling 5/8 of the tank is used. What fraction of the tank is full now? =
  2. 2.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? =
  3. 3.A tank is 5/8 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  4. 4.2/3 − 2/5 =
  5. 5.5/6 − 5/8 =
  6. 6.A bottle has 1/3 litre of juice. Tara drinks 1/5 litre. How much juice is left (in litres)? =
  7. 7.1/3 − 1/8 =
  8. 8.A tank is 7/10 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  9. 9.8/9 − 1/6 =
  10. 10.2/3 − 3/8 =
  11. 11.Tara has a ribbon 7/10 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  12. 12.3/4 − 4/7 =
  13. 13.4/9 − 1/6 =
  14. 14.2/3 − 2/9 =
  15. 15.5/8 − 1/3 =
  16. 16.A bottle has 1/5 litre of juice. Kabir drinks 1/6 litre. How much juice is left (in litres)? =
  17. 17.4/5 − 1/10 =
  18. 18.A tank is 2/5 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  19. 19.A bottle has 5/9 litre of juice. Rohan drinks 1/6 litre. How much juice is left (in litres)? =
  20. 20.A bottle has 1/3 litre of juice. Riya drinks 2/9 litre. How much juice is left (in litres)? =
  21. 21.6/7 − 2/3 =
  22. 22.3/4 − 3/8 =
  23. 23.Diya has a ribbon 8/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  24. 24.2/3 − 2/7 =
  25. 25.7/10 − 1/5 =
  26. 26.1/6 − 1/8 =
  27. 27.A bottle has 3/4 litre of juice. Rohan drinks 3/8 litre. How much juice is left (in litres)? =
  28. 28.A bottle has 3/4 litre of juice. Rohan drinks 4/7 litre. How much juice is left (in litres)? =
  29. 29.1/3 − 1/5 =
  30. 30.2/3 − 4/9 =
  31. 31.A tank is 2/3 full of water. Then water filling 1/7 of the tank is used. What fraction of the tank is full now? =
  32. 32.A bottle has 7/8 litre of juice. Aarav drinks 1/2 litre. How much juice is left (in litres)? =
  33. 33.Kabir has a ribbon 7/8 m long and cuts off 5/6 m. How long is the ribbon now (in m)? =
  34. 34.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? =
  35. 35.5/6 − 1/10 =
  36. 36.2/5 − 1/3 =
  37. 37.A bottle has 1/2 litre of juice. Anaya drinks 4/9 litre. How much juice is left (in litres)? =
  38. 38.A tank is 1/3 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  39. 39.4/5 − 1/3 =
  40. 40.Meera has a ribbon 9/10 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =

Answer key

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

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