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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 484 · 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 − 5/8 =
  2. 2.A bottle has 7/8 litre of juice. Arjun drinks 1/4 litre. How much juice is left (in litres)? =
  3. 3.A tank is 1/2 full of water. Then water filling 3/8 of the tank is used. What fraction of the tank is full now? =
  4. 4.2/9 − 1/6 =
  5. 5.1/3 − 1/8 =
  6. 6.1/6 − 1/9 =
  7. 7.5/8 − 1/3 =
  8. 8.A bottle has 4/5 litre of juice. Diya drinks 3/4 litre. How much juice is left (in litres)? =
  9. 9.A bottle has 3/4 litre of juice. Riya drinks 1/8 litre. How much juice is left (in litres)? =
  10. 10.Meera has a ribbon 3/4 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  11. 11.5/6 − 1/8 =
  12. 12.A bottle has 5/6 litre of juice. Diya drinks 4/9 litre. How much juice is left (in litres)? =
  13. 13.A bottle has 2/3 litre of juice. Diya drinks 2/7 litre. How much juice is left (in litres)? =
  14. 14.4/5 − 7/10 =
  15. 15.3/4 − 3/8 =
  16. 16.1/2 − 1/8 =
  17. 17.2/5 − 1/6 =
  18. 18.7/8 − 3/4 =
  19. 19.A bottle has 1/2 litre of juice. Tara drinks 1/5 litre. How much juice is left (in litres)? =
  20. 20.A tank is 4/7 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  21. 21.1/2 − 1/10 =
  22. 22.Ishaan has a ribbon 4/7 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  23. 23.2/3 − 3/7 =
  24. 24.A bottle has 2/3 litre of juice. Aarav drinks 1/4 litre. How much juice is left (in litres)? =
  25. 25.A bottle has 9/10 litre of juice. Rohan drinks 4/5 litre. How much juice is left (in litres)? =
  26. 26.A tank is 1/6 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  27. 27.A tank is 7/9 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  28. 28.3/7 − 1/3 =
  29. 29.8/9 − 1/2 =
  30. 30.1/5 − 1/6 =
  31. 31.3/4 − 3/5 =
  32. 32.5/6 − 3/8 =
  33. 33.3/5 − 1/4 =
  34. 34.4/9 − 1/3 =
  35. 35.9/10 − 2/5 =
  36. 36.1/4 − 1/8 =
  37. 37.A bottle has 3/8 litre of juice. Meera drinks 1/6 litre. How much juice is left (in litres)? =
  38. 38.A bottle has 2/3 litre of juice. Aarav drinks 2/9 litre. How much juice is left (in litres)? =
  39. 39.Kabir has a ribbon 7/10 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  40. 40.1/2 − 2/7 =

Answer key

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

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