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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 471 · 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 2/5 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  2. 2.2/3 − 4/9 =
  3. 3.5/6 − 1/2 =
  4. 4.1/3 − 1/4 =
  5. 5.5/7 − 1/2 =
  6. 6.A tank is 3/5 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  7. 7.Diya has a ribbon 1/2 m long and cuts off 2/9 m. How long is the ribbon now (in m)? =
  8. 8.5/6 − 1/3 =
  9. 9.Ishaan has a ribbon 5/6 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  10. 10.2/3 − 1/10 =
  11. 11.4/9 − 1/6 =
  12. 12.1/4 − 1/8 =
  13. 13.3/4 − 1/3 =
  14. 14.A bottle has 7/8 litre of juice. Aarav drinks 1/2 litre. How much juice is left (in litres)? =
  15. 15.A tank is 3/4 full of water. Then water filling 2/5 of the tank is used. What fraction of the tank is full now? =
  16. 16.1/2 − 3/10 =
  17. 17.A bottle has 6/7 litre of juice. Sara drinks 1/3 litre. How much juice is left (in litres)? =
  18. 18.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? =
  19. 19.7/8 − 1/4 =
  20. 20.2/5 − 3/10 =
  21. 21.A bottle has 5/6 litre of juice. Tara drinks 5/9 litre. How much juice is left (in litres)? =
  22. 22.3/5 − 1/2 =
  23. 23.A tank is 4/5 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  24. 24.3/4 − 1/7 =
  25. 25.1/4 − 1/7 =
  26. 26.A bottle has 2/5 litre of juice. Riya drinks 1/10 litre. How much juice is left (in litres)? =
  27. 27.2/3 − 4/7 =
  28. 28.1/2 − 2/5 =
  29. 29.Diya has a ribbon 6/7 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  30. 30.5/6 − 5/9 =
  31. 31.A tank is 1/5 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  32. 32.5/8 − 1/6 =
  33. 33.Arjun has a ribbon 2/5 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  34. 34.Kabir has a ribbon 7/10 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  35. 35.3/5 − 3/10 =
  36. 36.A bottle has 5/6 litre of juice. Tara drinks 2/3 litre. How much juice is left (in litres)? =
  37. 37.9/10 − 2/5 =
  38. 38.5/7 − 2/3 =
  39. 39.3/8 − 1/4 =
  40. 40.Tara has a ribbon 7/8 m long and cuts off 3/4 m. How long is the ribbon now (in m)? =

Answer key

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

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