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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 55 · 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 3/10 litre of juice. Kabir drinks 1/5 litre. How much juice is left (in litres)? =
  2. 2.1/6 − 1/9 =
  3. 3.5/6 − 5/8 =
  4. 4.A tank is 4/5 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  5. 5.3/4 − 1/2 =
  6. 6.A bottle has 1/3 litre of juice. Anaya drinks 2/9 litre. How much juice is left (in litres)? =
  7. 7.6/7 − 2/3 =
  8. 8.5/7 − 1/3 =
  9. 9.8/9 − 1/3 =
  10. 10.A bottle has 4/9 litre of juice. Meera drinks 1/3 litre. How much juice is left (in litres)? =
  11. 11.9/10 − 3/4 =
  12. 12.Diya has a ribbon 5/7 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  13. 13.A tank is 2/3 full of water. Then water filling 2/7 of the tank is used. What fraction of the tank is full now? =
  14. 14.A bottle has 5/8 litre of juice. Ishaan drinks 1/6 litre. How much juice is left (in litres)? =
  15. 15.3/10 − 1/5 =
  16. 16.A bottle has 9/10 litre of juice. Kabir drinks 2/3 litre. How much juice is left (in litres)? =
  17. 17.5/6 − 3/8 =
  18. 18.7/9 − 1/6 =
  19. 19.Sara has a ribbon 5/6 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  20. 20.1/3 − 1/9 =
  21. 21.3/5 − 3/10 =
  22. 22.A bottle has 3/4 litre of juice. Riya drinks 3/7 litre. How much juice is left (in litres)? =
  23. 23.A bottle has 6/7 litre of juice. Riya drinks 1/4 litre. How much juice is left (in litres)? =
  24. 24.5/9 − 1/3 =
  25. 25.7/10 − 3/5 =
  26. 26.3/7 − 1/4 =
  27. 27.3/4 − 3/10 =
  28. 28.7/8 − 1/2 =
  29. 29.3/4 − 2/5 =
  30. 30.1/2 − 3/7 =
  31. 31.A bottle has 9/10 litre of juice. Anaya drinks 2/5 litre. How much juice is left (in litres)? =
  32. 32.A tank is 1/4 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  33. 33.A bottle has 5/9 litre of juice. Sara drinks 1/6 litre. How much juice is left (in litres)? =
  34. 34.Aarav has a ribbon 7/8 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  35. 35.Tara has a ribbon 6/7 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  36. 36.4/5 − 1/3 =
  37. 37.Arjun has a ribbon 8/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  38. 38.3/4 − 3/7 =
  39. 39.9/10 − 1/4 =
  40. 40.A bottle has 7/9 litre of juice. Anaya drinks 1/3 litre. How much juice is left (in litres)? =

Answer key

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

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