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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 724 · 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 5/6 litre of juice. Arjun drinks 3/5 litre. How much juice is left (in litres)? =
  2. 2.Arjun has a ribbon 2/3 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  3. 3.Arjun has a ribbon 4/5 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  4. 4.8/9 − 1/3 =
  5. 5.A bottle has 1/2 litre of juice. Anaya drinks 1/8 litre. How much juice is left (in litres)? =
  6. 6.3/4 − 3/5 =
  7. 7.A bottle has 5/6 litre of juice. Diya drinks 3/5 litre. How much juice is left (in litres)? =
  8. 8.4/5 − 1/3 =
  9. 9.1/3 − 1/9 =
  10. 10.A bottle has 3/5 litre of juice. Kabir drinks 1/4 litre. How much juice is left (in litres)? =
  11. 11.A bottle has 4/5 litre of juice. Aarav drinks 3/10 litre. How much juice is left (in litres)? =
  12. 12.4/7 − 1/2 =
  13. 13.1/2 − 1/8 =
  14. 14.Aarav has a ribbon 2/3 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  15. 15.Meera has a ribbon 8/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  16. 16.9/10 − 1/2 =
  17. 17.1/3 − 1/5 =
  18. 18.3/7 − 1/4 =
  19. 19.A bottle has 5/8 litre of juice. Arjun drinks 1/6 litre. How much juice is left (in litres)? =
  20. 20.A bottle has 3/4 litre of juice. Anaya drinks 2/5 litre. How much juice is left (in litres)? =
  21. 21.5/6 − 1/9 =
  22. 22.A tank is 3/4 full of water. Then water filling 3/5 of the tank is used. What fraction of the tank is full now? =
  23. 23.A bottle has 4/5 litre of juice. Sara drinks 1/4 litre. How much juice is left (in litres)? =
  24. 24.2/3 − 1/9 =
  25. 25.A tank is 1/2 full of water. Then water filling 1/7 of the tank is used. What fraction of the tank is full now? =
  26. 26.Rohan has a ribbon 4/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  27. 27.4/5 − 2/3 =
  28. 28.Diya has a ribbon 1/2 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  29. 29.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? =
  30. 30.Meera has a ribbon 3/4 m long and cuts off 7/10 m. How long is the ribbon now (in m)? =
  31. 31.1/3 − 1/7 =
  32. 32.1/3 − 2/7 =
  33. 33.5/7 − 1/2 =
  34. 34.A bottle has 1/2 litre of juice. Meera drinks 1/5 litre. How much juice is left (in litres)? =
  35. 35.A bottle has 4/5 litre of juice. Aarav drinks 1/4 litre. How much juice is left (in litres)? =
  36. 36.3/4 − 5/7 =
  37. 37.1/2 − 2/5 =
  38. 38.1/4 − 1/7 =
  39. 39.Vihaan has a ribbon 2/3 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  40. 40.Ishaan has a ribbon 2/3 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =

Answer key

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

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