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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 406 · 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 4/7 litre of juice. Aarav drinks 1/2 litre. How much juice is left (in litres)? =
  2. 2.4/5 − 3/4 =
  3. 3.A bottle has 5/9 litre of juice. Diya drinks 1/6 litre. How much juice is left (in litres)? =
  4. 4.1/2 − 3/7 =
  5. 5.9/10 − 3/5 =
  6. 6.A tank is 5/6 full of water. Then water filling 4/9 of the tank is used. What fraction of the tank is full now? =
  7. 7.7/10 − 3/5 =
  8. 8.7/8 − 1/2 =
  9. 9.3/4 − 2/7 =
  10. 10.3/4 − 1/7 =
  11. 11.A bottle has 3/4 litre of juice. Vihaan drinks 1/8 litre. How much juice is left (in litres)? =
  12. 12.3/4 − 1/2 =
  13. 13.A tank is 4/5 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  14. 14.1/2 − 2/7 =
  15. 15.Arjun has a ribbon 3/4 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  16. 16.3/4 − 2/5 =
  17. 17.A tank is 3/7 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  18. 18.1/3 − 1/5 =
  19. 19.2/3 − 3/5 =
  20. 20.7/10 − 1/3 =
  21. 21.5/6 − 3/5 =
  22. 22.A tank is 5/6 full of water. Then water filling 2/5 of the tank is used. What fraction of the tank is full now? =
  23. 23.Ishaan has a ribbon 4/5 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  24. 24.7/9 − 1/3 =
  25. 25.A bottle has 1/5 litre of juice. Anaya drinks 1/6 litre. How much juice is left (in litres)? =
  26. 26.2/3 − 5/9 =
  27. 27.2/7 − 1/4 =
  28. 28.A bottle has 4/5 litre of juice. Ishaan drinks 3/10 litre. How much juice is left (in litres)? =
  29. 29.A bottle has 1/3 litre of juice. Riya drinks 1/9 litre. How much juice is left (in litres)? =
  30. 30.A bottle has 7/10 litre of juice. Kabir drinks 1/5 litre. How much juice is left (in litres)? =
  31. 31.Rohan has a ribbon 5/7 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  32. 32.Ishaan has a ribbon 5/6 m long and cuts off 4/9 m. How long is the ribbon now (in m)? =
  33. 33.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? =
  34. 34.A bottle has 1/2 litre of juice. Meera drinks 3/7 litre. How much juice is left (in litres)? =
  35. 35.7/9 − 2/3 =
  36. 36.Aarav has a ribbon 7/8 m long and cuts off 3/4 m. How long is the ribbon now (in m)? =
  37. 37.2/5 − 1/10 =
  38. 38.6/7 − 1/3 =
  39. 39.A bottle has 6/7 litre of juice. Rohan drinks 3/4 litre. How much juice is left (in litres)? =
  40. 40.5/6 − 7/9 =

Answer key

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

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