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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 329 · 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 2/3 litre of juice. Arjun drinks 5/8 litre. How much juice is left (in litres)? =
  2. 2.A bottle has 9/10 litre of juice. Tara drinks 3/5 litre. How much juice is left (in litres)? =
  3. 3.A bottle has 2/9 litre of juice. Rohan drinks 1/6 litre. How much juice is left (in litres)? =
  4. 4.Ishaan has a ribbon 7/10 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  5. 5.A bottle has 5/9 litre of juice. Meera drinks 1/2 litre. How much juice is left (in litres)? =
  6. 6.A bottle has 3/4 litre of juice. Aarav drinks 1/2 litre. How much juice is left (in litres)? =
  7. 7.2/3 − 3/7 =
  8. 8.Vihaan has a ribbon 2/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  9. 9.3/8 − 1/6 =
  10. 10.1/3 − 1/10 =
  11. 11.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? =
  12. 12.9/10 − 2/3 =
  13. 13.9/10 − 5/6 =
  14. 14.1/2 − 1/7 =
  15. 15.A bottle has 5/7 litre of juice. Diya drinks 1/4 litre. How much juice is left (in litres)? =
  16. 16.2/3 − 3/5 =
  17. 17.3/4 − 2/3 =
  18. 18.A tank is 2/3 full of water. Then water filling 1/9 of the tank is used. What fraction of the tank is full now? =
  19. 19.Aarav has a ribbon 7/8 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  20. 20.Vihaan has a ribbon 4/7 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  21. 21.1/2 − 1/5 =
  22. 22.1/2 − 1/6 =
  23. 23.9/10 − 1/4 =
  24. 24.5/7 − 2/3 =
  25. 25.A bottle has 2/3 litre of juice. Rohan drinks 1/10 litre. How much juice is left (in litres)? =
  26. 26.1/2 − 2/9 =
  27. 27.1/2 − 2/5 =
  28. 28.3/5 − 1/10 =
  29. 29.9/10 − 2/5 =
  30. 30.3/5 − 1/4 =
  31. 31.7/10 − 1/2 =
  32. 32.3/4 − 3/5 =
  33. 33.2/3 − 4/7 =
  34. 34.3/4 − 1/2 =
  35. 35.A tank is 5/6 full of water. Then water filling 4/5 of the tank is used. What fraction of the tank is full now? =
  36. 36.5/7 − 1/2 =
  37. 37.Meera has a ribbon 3/10 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  38. 38.A tank is 1/3 full of water. Then water filling 2/9 of the tank is used. What fraction of the tank is full now? =
  39. 39.A tank is 3/8 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  40. 40.6/7 − 1/3 =

Answer key

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

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