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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 453 · 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 − 2/9 =
  2. 2.A tank is 7/10 full of water. Then water filling 2/5 of the tank is used. What fraction of the tank is full now? =
  3. 3.A tank is 5/6 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  4. 4.3/4 − 3/10 =
  5. 5.9/10 − 1/4 =
  6. 6.Kabir has a ribbon 1/6 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  7. 7.A bottle has 4/5 litre of juice. Arjun drinks 1/6 litre. How much juice is left (in litres)? =
  8. 8.2/9 − 1/6 =
  9. 9.3/4 − 3/5 =
  10. 10.Vihaan has a ribbon 2/5 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  11. 11.Ishaan has a ribbon 1/3 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  12. 12.A bottle has 3/4 litre of juice. Rohan drinks 3/5 litre. How much juice is left (in litres)? =
  13. 13.A bottle has 4/5 litre of juice. Ishaan drinks 7/10 litre. How much juice is left (in litres)? =
  14. 14.A tank is 6/7 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  15. 15.9/10 − 5/6 =
  16. 16.6/7 − 3/4 =
  17. 17.Ishaan has a ribbon 2/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  18. 18.2/5 − 1/4 =
  19. 19.5/7 − 1/2 =
  20. 20.7/9 − 2/3 =
  21. 21.A tank is 1/4 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  22. 22.Kabir has a ribbon 1/2 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  23. 23.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? =
  24. 24.A bottle has 1/2 litre of juice. Tara drinks 1/4 litre. How much juice is left (in litres)? =
  25. 25.2/3 − 4/9 =
  26. 26.Diya has a ribbon 2/3 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  27. 27.1/2 − 2/9 =
  28. 28.3/4 − 1/3 =
  29. 29.A tank is 3/10 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  30. 30.5/6 − 2/9 =
  31. 31.1/2 − 1/10 =
  32. 32.A tank is 3/7 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  33. 33.1/3 − 2/7 =
  34. 34.7/10 − 1/2 =
  35. 35.A tank is 7/10 full of water. Then water filling 3/5 of the tank is used. What fraction of the tank is full now? =
  36. 36.Kabir has a ribbon 7/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  37. 37.Aarav has a ribbon 3/5 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  38. 38.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? =
  39. 39.A bottle has 3/4 litre of juice. Riya drinks 2/3 litre. How much juice is left (in litres)? =
  40. 40.A tank is 1/3 full of water. Then water filling 2/7 of the tank is used. What fraction of the tank is full now? =

Answer key

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

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