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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 656 · 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. 1.5/6 − 3/8 =
  2. 2.3/5 − 1/3 =
  3. 3.2/3 − 4/9 =
  4. 4.A bottle has 5/7 litre of juice. Arjun drinks 1/4 litre. How much juice is left (in litres)? =
  5. 5.1/2 − 1/7 =
  6. 6.4/5 − 1/2 =
  7. 7.7/10 − 3/5 =
  8. 8.A tank is 5/6 full of water. Then water filling 2/9 of the tank is used. What fraction of the tank is full now? =
  9. 9.4/9 − 1/3 =
  10. 10.2/5 − 1/10 =
  11. 11.A tank is 9/10 full of water. Then water filling 2/5 of the tank is used. What fraction of the tank is full now? =
  12. 12.5/6 − 5/9 =
  13. 13.2/3 − 2/9 =
  14. 14.Riya has a ribbon 3/4 m long and cuts off 5/8 m. How long is the ribbon now (in m)? =
  15. 15.Aarav has a ribbon 2/3 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  16. 16.Meera has a ribbon 3/4 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  17. 17.7/8 − 5/6 =
  18. 18.5/6 − 1/9 =
  19. 19.A tank is 3/4 full of water. Then water filling 2/7 of the tank is used. What fraction of the tank is full now? =
  20. 20.2/3 − 1/6 =
  21. 21.3/7 − 1/3 =
  22. 22.A tank is 3/8 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  23. 23.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? =
  24. 24.A tank is 9/10 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  25. 25.9/10 − 2/5 =
  26. 26.3/4 − 1/7 =
  27. 27.2/5 − 1/4 =
  28. 28.5/6 − 5/8 =
  29. 29.3/4 − 3/7 =
  30. 30.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? =
  31. 31.9/10 − 1/6 =
  32. 32.A bottle has 3/5 litre of juice. Ishaan drinks 1/2 litre. How much juice is left (in litres)? =
  33. 33.A bottle has 4/5 litre of juice. Arjun drinks 7/10 litre. How much juice is left (in litres)? =
  34. 34.Sara has a ribbon 9/10 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  35. 35.Arjun has a ribbon 5/6 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  36. 36.A bottle has 2/3 litre of juice. Riya drinks 5/9 litre. How much juice is left (in litres)? =
  37. 37.Kabir has a ribbon 5/8 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  38. 38.5/8 − 1/6 =
  39. 39.A bottle has 1/2 litre of juice. Meera drinks 2/7 litre. How much juice is left (in litres)? =
  40. 40.A bottle has 1/2 litre of juice. Tara drinks 1/8 litre. How much juice is left (in litres)? =

Answer key

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

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