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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 542 · 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 5/8 litre of juice. Arjun drinks 1/3 litre. How much juice is left (in litres)? =
  2. 2.3/5 − 1/3 =
  3. 3.Tara has a ribbon 4/5 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  4. 4.3/4 − 1/8 =
  5. 5.7/10 − 2/3 =
  6. 6.Diya has a ribbon 8/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  7. 7.5/6 − 3/4 =
  8. 8.A bottle has 4/5 litre of juice. Meera drinks 1/3 litre. How much juice is left (in litres)? =
  9. 9.9/10 − 4/5 =
  10. 10.3/4 − 1/10 =
  11. 11.2/3 − 2/7 =
  12. 12.3/4 − 5/7 =
  13. 13.4/7 − 1/2 =
  14. 14.1/2 − 2/7 =
  15. 15.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? =
  16. 16.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? =
  17. 17.5/8 − 1/2 =
  18. 18.2/5 − 1/3 =
  19. 19.Rohan has a ribbon 2/3 m long and cuts off 4/9 m. How long is the ribbon now (in m)? =
  20. 20.2/3 − 4/9 =
  21. 21.2/3 − 4/7 =
  22. 22.A tank is 2/3 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  23. 23.7/8 − 2/3 =
  24. 24.7/10 − 1/3 =
  25. 25.8/9 − 5/6 =
  26. 26.7/8 − 3/4 =
  27. 27.7/9 − 1/3 =
  28. 28.5/6 − 7/9 =
  29. 29.3/10 − 1/5 =
  30. 30.1/3 − 1/10 =
  31. 31.A bottle has 7/9 litre of juice. Aarav drinks 1/2 litre. How much juice is left (in litres)? =
  32. 32.A bottle has 3/7 litre of juice. Diya drinks 1/4 litre. How much juice is left (in litres)? =
  33. 33.Sara has a ribbon 3/4 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  34. 34.A bottle has 3/4 litre of juice. Diya drinks 1/7 litre. How much juice is left (in litres)? =
  35. 35.A bottle has 3/4 litre of juice. Meera drinks 2/5 litre. How much juice is left (in litres)? =
  36. 36.A bottle has 3/5 litre of juice. Arjun drinks 1/2 litre. How much juice is left (in litres)? =
  37. 37.A bottle has 2/9 litre of juice. Ishaan drinks 1/6 litre. How much juice is left (in litres)? =
  38. 38.8/9 − 2/3 =
  39. 39.Arjun has a ribbon 2/3 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  40. 40.2/3 − 3/8 =

Answer key

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

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