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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 635 · 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 1/2 litre of juice. Riya drinks 1/7 litre. How much juice is left (in litres)? =
  2. 2.8/9 − 5/6 =
  3. 3.A bottle has 1/3 litre of juice. Kabir drinks 1/6 litre. How much juice is left (in litres)? =
  4. 4.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? =
  5. 5.7/8 − 1/3 =
  6. 6.A bottle has 4/5 litre of juice. Arjun drinks 7/10 litre. How much juice is left (in litres)? =
  7. 7.A tank is 4/5 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  8. 8.A tank is 2/9 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  9. 9.2/3 − 4/7 =
  10. 10.7/10 − 1/5 =
  11. 11.A bottle has 8/9 litre of juice. Rohan drinks 2/3 litre. How much juice is left (in litres)? =
  12. 12.A tank is 1/6 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  13. 13.A tank is 4/5 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  14. 14.4/5 − 1/3 =
  15. 15.Rohan has a ribbon 1/2 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  16. 16.A bottle has 5/9 litre of juice. Diya drinks 1/3 litre. How much juice is left (in litres)? =
  17. 17.7/8 − 3/4 =
  18. 18.2/3 − 2/9 =
  19. 19.1/3 − 1/8 =
  20. 20.5/6 − 2/9 =
  21. 21.3/4 − 3/5 =
  22. 22.1/4 − 1/5 =
  23. 23.A tank is 1/4 full of water. Then water filling 1/7 of the tank is used. What fraction of the tank is full now? =
  24. 24.A tank is 3/4 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  25. 25.Vihaan has a ribbon 1/3 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  26. 26.Anaya has a ribbon 8/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  27. 27.7/10 − 2/3 =
  28. 28.8/9 − 1/3 =
  29. 29.A bottle has 5/6 litre of juice. Aarav drinks 3/5 litre. How much juice is left (in litres)? =
  30. 30.A tank is 2/5 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  31. 31.A bottle has 5/6 litre of juice. Diya drinks 1/5 litre. How much juice is left (in litres)? =
  32. 32.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? =
  33. 33.5/8 − 1/6 =
  34. 34.2/3 − 1/8 =
  35. 35.3/4 − 4/7 =
  36. 36.3/4 − 1/7 =
  37. 37.A bottle has 1/5 litre of juice. Kabir drinks 1/10 litre. How much juice is left (in litres)? =
  38. 38.A bottle has 3/7 litre of juice. Anaya drinks 1/4 litre. How much juice is left (in litres)? =
  39. 39.A bottle has 9/10 litre of juice. Kabir drinks 1/5 litre. How much juice is left (in litres)? =
  40. 40.2/3 − 1/9 =

Answer key

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

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