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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 226 · 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.Meera has a ribbon 1/2 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  2. 2.A bottle has 3/5 litre of juice. Ishaan drinks 1/4 litre. How much juice is left (in litres)? =
  3. 3.Riya has a ribbon 2/3 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  4. 4.Vihaan has a ribbon 3/4 m long and cuts off 5/7 m. How long is the ribbon now (in m)? =
  5. 5.A bottle has 5/6 litre of juice. Arjun drinks 1/8 litre. How much juice is left (in litres)? =
  6. 6.7/8 − 1/6 =
  7. 7.Rohan has a ribbon 3/4 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  8. 8.1/3 − 1/6 =
  9. 9.A bottle has 1/3 litre of juice. Sara drinks 2/7 litre. How much juice is left (in litres)? =
  10. 10.3/4 − 3/8 =
  11. 11.4/5 − 1/3 =
  12. 12.6/7 − 1/4 =
  13. 13.2/9 − 1/6 =
  14. 14.A bottle has 1/2 litre of juice. Rohan drinks 1/10 litre. How much juice is left (in litres)? =
  15. 15.2/3 − 1/5 =
  16. 16.A bottle has 3/4 litre of juice. Vihaan drinks 2/7 litre. How much juice is left (in litres)? =
  17. 17.8/9 − 1/6 =
  18. 18.A bottle has 2/3 litre of juice. Sara drinks 5/9 litre. How much juice is left (in litres)? =
  19. 19.A tank is 3/4 full of water. Then water filling 5/7 of the tank is used. What fraction of the tank is full now? =
  20. 20.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? =
  21. 21.Riya has a ribbon 4/5 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  22. 22.3/4 − 1/2 =
  23. 23.2/5 − 1/4 =
  24. 24.5/9 − 1/3 =
  25. 25.3/7 − 1/3 =
  26. 26.2/3 − 3/8 =
  27. 27.Riya has a ribbon 7/10 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  28. 28.A tank is 2/3 full of water. Then water filling 3/8 of the tank is used. What fraction of the tank is full now? =
  29. 29.2/3 − 2/7 =
  30. 30.1/3 − 1/5 =
  31. 31.2/5 − 3/10 =
  32. 32.A bottle has 1/4 litre of juice. Diya drinks 1/7 litre. How much juice is left (in litres)? =
  33. 33.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? =
  34. 34.1/2 − 2/7 =
  35. 35.4/7 − 1/2 =
  36. 36.A bottle has 5/9 litre of juice. Aarav drinks 1/2 litre. How much juice is left (in litres)? =
  37. 37.7/9 − 1/6 =
  38. 38.Arjun has a ribbon 3/4 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  39. 39.A tank is 2/5 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  40. 40.5/6 − 3/4 =

Answer key

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

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