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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 581 · 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 2/3 litre of juice. Rohan drinks 5/8 litre. How much juice is left (in litres)? =
  2. 2.Aarav has a ribbon 2/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  3. 3.A bottle has 5/7 litre of juice. Rohan drinks 1/2 litre. How much juice is left (in litres)? =
  4. 4.Kabir has a ribbon 4/5 m long and cuts off 7/10 m. How long is the ribbon now (in m)? =
  5. 5.2/9 − 1/6 =
  6. 6.5/6 − 1/3 =
  7. 7.6/7 − 1/2 =
  8. 8.A bottle has 1/5 litre of juice. Ishaan drinks 1/10 litre. How much juice is left (in litres)? =
  9. 9.1/3 − 1/4 =
  10. 10.1/2 − 1/9 =
  11. 11.Meera has a ribbon 3/4 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  12. 12.1/4 − 1/5 =
  13. 13.A bottle has 2/3 litre of juice. Tara drinks 4/7 litre. How much juice is left (in litres)? =
  14. 14.5/6 − 3/4 =
  15. 15.5/6 − 3/5 =
  16. 16.4/5 − 7/10 =
  17. 17.A tank is 3/4 full of water. Then water filling 5/8 of the tank is used. What fraction of the tank is full now? =
  18. 18.7/8 − 1/6 =
  19. 19.1/5 − 1/10 =
  20. 20.9/10 − 1/6 =
  21. 21.5/6 − 3/8 =
  22. 22.A bottle has 3/7 litre of juice. Kabir drinks 1/3 litre. How much juice is left (in litres)? =
  23. 23.A tank is 3/10 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  24. 24.A bottle has 1/2 litre of juice. Sara drinks 4/9 litre. How much juice is left (in litres)? =
  25. 25.A bottle has 2/3 litre of juice. Diya drinks 1/7 litre. How much juice is left (in litres)? =
  26. 26.A tank is 5/6 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  27. 27.7/8 − 5/6 =
  28. 28.2/3 − 2/9 =
  29. 29.Rohan has a ribbon 6/7 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  30. 30.1/3 − 1/8 =
  31. 31.A bottle has 1/6 litre of juice. Rohan drinks 1/10 litre. How much juice is left (in litres)? =
  32. 32.A tank is 3/4 full of water. Then water filling 2/7 of the tank is used. What fraction of the tank is full now? =
  33. 33.5/7 − 1/2 =
  34. 34.1/3 − 1/9 =
  35. 35.2/3 − 4/9 =
  36. 36.A bottle has 3/4 litre of juice. Sara drinks 1/8 litre. How much juice is left (in litres)? =
  37. 37.5/6 − 2/5 =
  38. 38.3/5 − 3/10 =
  39. 39.Meera has a ribbon 3/5 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  40. 40.3/5 − 1/6 =

Answer key

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

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