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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 269 · 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 1/6 litre of juice. Rohan drinks 1/10 litre. How much juice is left (in litres)? =
  2. 2.Ishaan has a ribbon 7/8 m long and cuts off 5/6 m. How long is the ribbon now (in m)? =
  3. 3.5/6 − 1/10 =
  4. 4.5/6 − 7/9 =
  5. 5.2/3 − 4/9 =
  6. 6.A bottle has 8/9 litre of juice. Diya drinks 2/3 litre. How much juice is left (in litres)? =
  7. 7.3/8 − 1/4 =
  8. 8.7/9 − 2/3 =
  9. 9.3/8 − 1/6 =
  10. 10.7/9 − 1/2 =
  11. 11.2/7 − 1/4 =
  12. 12.4/7 − 1/4 =
  13. 13.A tank is 1/2 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  14. 14.5/6 − 1/9 =
  15. 15.7/9 − 1/6 =
  16. 16.4/5 − 2/3 =
  17. 17.A bottle has 5/6 litre of juice. Kabir drinks 7/10 litre. How much juice is left (in litres)? =
  18. 18.A bottle has 1/2 litre of juice. Meera drinks 2/5 litre. How much juice is left (in litres)? =
  19. 19.A tank is 4/7 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  20. 20.A bottle has 5/6 litre of juice. Aarav drinks 7/9 litre. How much juice is left (in litres)? =
  21. 21.4/7 − 1/3 =
  22. 22.Meera has a ribbon 3/8 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  23. 23.5/6 − 1/8 =
  24. 24.8/9 − 1/2 =
  25. 25.3/4 − 3/7 =
  26. 26.Anaya has a ribbon 2/3 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  27. 27.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? =
  28. 28.3/4 − 1/7 =
  29. 29.Ishaan has a ribbon 7/10 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  30. 30.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? =
  31. 31.2/3 − 2/5 =
  32. 32.2/3 − 5/9 =
  33. 33.7/10 − 1/3 =
  34. 34.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? =
  35. 35.3/4 − 5/7 =
  36. 36.7/9 − 1/3 =
  37. 37.9/10 − 2/5 =
  38. 38.4/5 − 1/3 =
  39. 39.A bottle has 1/2 litre of juice. Diya drinks 1/4 litre. How much juice is left (in litres)? =
  40. 40.1/3 − 1/8 =

Answer key

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

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