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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 463 · 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 1/2 litre of juice. Diya drinks 1/7 litre. How much juice is left (in litres)? =
  2. 2.Aarav has a ribbon 5/6 m long and cuts off 7/10 m. How long is the ribbon now (in m)? =
  3. 3.1/5 − 1/6 =
  4. 4.4/9 − 1/3 =
  5. 5.4/5 − 1/2 =
  6. 6.1/3 − 2/9 =
  7. 7.A bottle has 5/8 litre of juice. Diya drinks 1/2 litre. How much juice is left (in litres)? =
  8. 8.A bottle has 5/9 litre of juice. Riya drinks 1/2 litre. How much juice is left (in litres)? =
  9. 9.7/9 − 1/6 =
  10. 10.2/3 − 1/8 =
  11. 11.5/8 − 1/2 =
  12. 12.6/7 − 1/4 =
  13. 13.A bottle has 1/6 litre of juice. Arjun drinks 1/8 litre. How much juice is left (in litres)? =
  14. 14.A bottle has 2/9 litre of juice. Diya drinks 1/6 litre. How much juice is left (in litres)? =
  15. 15.Ishaan has a ribbon 1/2 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  16. 16.5/9 − 1/2 =
  17. 17.A bottle has 3/4 litre of juice. Riya drinks 2/3 litre. How much juice is left (in litres)? =
  18. 18.A bottle has 7/10 litre of juice. Meera drinks 2/5 litre. How much juice is left (in litres)? =
  19. 19.2/7 − 1/4 =
  20. 20.2/3 − 5/8 =
  21. 21.1/5 − 1/10 =
  22. 22.Meera has a ribbon 2/5 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  23. 23.A bottle has 2/3 litre of juice. Diya drinks 1/2 litre. How much juice is left (in litres)? =
  24. 24.A bottle has 5/6 litre of juice. Ishaan drinks 4/9 litre. How much juice is left (in litres)? =
  25. 25.5/7 − 1/3 =
  26. 26.4/5 − 2/3 =
  27. 27.9/10 − 2/5 =
  28. 28.5/7 − 2/3 =
  29. 29.A tank is 7/8 full of water. Then water filling 3/4 of the tank is used. What fraction of the tank is full now? =
  30. 30.3/4 − 1/7 =
  31. 31.4/7 − 1/2 =
  32. 32.Kabir has a ribbon 3/5 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  33. 33.Riya has a ribbon 1/3 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  34. 34.5/6 − 1/9 =
  35. 35.A tank is 1/2 full of water. Then water filling 4/9 of the tank is used. What fraction of the tank is full now? =
  36. 36.A bottle has 5/6 litre of juice. Riya drinks 1/5 litre. How much juice is left (in litres)? =
  37. 37.6/7 − 2/3 =
  38. 38.2/3 − 2/5 =
  39. 39.8/9 − 1/2 =
  40. 40.3/4 − 5/8 =

Answer key

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

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