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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 586 · 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. Riya drinks 1/7 litre. How much juice is left (in litres)? =
  2. 2.Aarav has a ribbon 2/7 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  3. 3.3/8 − 1/6 =
  4. 4.1/2 − 1/3 =
  5. 5.2/3 − 1/9 =
  6. 6.A bottle has 1/2 litre of juice. Aarav drinks 3/10 litre. How much juice is left (in litres)? =
  7. 7.7/10 − 3/5 =
  8. 8.7/8 − 2/3 =
  9. 9.2/3 − 3/5 =
  10. 10.1/4 − 1/5 =
  11. 11.A bottle has 1/4 litre of juice. Vihaan drinks 1/7 litre. How much juice is left (in litres)? =
  12. 12.5/6 − 1/10 =
  13. 13.2/3 − 4/7 =
  14. 14.2/3 − 2/9 =
  15. 15.Sara has a ribbon 7/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  16. 16.9/10 − 1/2 =
  17. 17.A bottle has 2/3 litre of juice. Aarav drinks 2/9 litre. How much juice is left (in litres)? =
  18. 18.A bottle has 9/10 litre of juice. Meera drinks 1/2 litre. How much juice is left (in litres)? =
  19. 19.4/5 − 1/10 =
  20. 20.3/4 − 2/7 =
  21. 21.Riya has a ribbon 7/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  22. 22.A tank is 3/4 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  23. 23.A bottle has 5/9 litre of juice. Aarav drinks 1/3 litre. How much juice is left (in litres)? =
  24. 24.1/3 − 1/10 =
  25. 25.A tank is 3/4 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  26. 26.5/6 − 7/10 =
  27. 27.Arjun has a ribbon 1/5 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  28. 28.9/10 − 3/4 =
  29. 29.4/9 − 1/6 =
  30. 30.3/8 − 1/3 =
  31. 31.1/5 − 1/6 =
  32. 32.2/3 − 1/8 =
  33. 33.3/4 − 1/2 =
  34. 34.A bottle has 4/7 litre of juice. Meera drinks 1/2 litre. How much juice is left (in litres)? =
  35. 35.A tank is 4/7 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  36. 36.A tank is 1/2 full of water. Then water filling 2/7 of the tank is used. What fraction of the tank is full now? =
  37. 37.A tank is 4/9 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  38. 38.3/4 − 3/10 =
  39. 39.Aarav has a ribbon 1/2 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  40. 40.7/10 − 1/6 =

Answer key

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

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