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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 331 · 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. 1.1/5 − 1/10 =
  2. 2.A bottle has 7/8 litre of juice. Rohan drinks 3/4 litre. How much juice is left (in litres)? =
  3. 3.A tank is 4/5 full of water. Then water filling 3/4 of the tank is used. What fraction of the tank is full now? =
  4. 4.3/5 − 1/3 =
  5. 5.A bottle has 5/9 litre of juice. Diya drinks 1/6 litre. How much juice is left (in litres)? =
  6. 6.1/3 − 1/4 =
  7. 7.9/10 − 3/5 =
  8. 8.7/10 − 1/2 =
  9. 9.Meera has a ribbon 5/6 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  10. 10.8/9 − 1/3 =
  11. 11.5/7 − 1/4 =
  12. 12.A tank is 4/5 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  13. 13.A bottle has 1/4 litre of juice. Diya drinks 1/8 litre. How much juice is left (in litres)? =
  14. 14.7/10 − 2/5 =
  15. 15.8/9 − 1/6 =
  16. 16.5/8 − 1/3 =
  17. 17.4/5 − 1/3 =
  18. 18.A bottle has 9/10 litre of juice. Arjun drinks 1/3 litre. How much juice is left (in litres)? =
  19. 19.Rohan has a ribbon 3/4 m long and cuts off 4/7 m. How long is the ribbon now (in m)? =
  20. 20.3/4 − 3/8 =
  21. 21.5/9 − 1/2 =
  22. 22.9/10 − 1/5 =
  23. 23.1/2 − 2/7 =
  24. 24.2/3 − 5/8 =
  25. 25.5/7 − 1/2 =
  26. 26.1/3 − 2/7 =
  27. 27.1/2 − 1/8 =
  28. 28.A bottle has 5/6 litre of juice. Ishaan drinks 7/10 litre. How much juice is left (in litres)? =
  29. 29.2/9 − 1/6 =
  30. 30.A tank is 9/10 full of water. Then water filling 3/4 of the tank is used. What fraction of the tank is full now? =
  31. 31.5/6 − 5/8 =
  32. 32.5/6 − 1/3 =
  33. 33.5/7 − 2/3 =
  34. 34.1/2 − 1/5 =
  35. 35.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? =
  36. 36.A bottle has 4/5 litre of juice. Rohan drinks 1/6 litre. How much juice is left (in litres)? =
  37. 37.A bottle has 7/8 litre of juice. Vihaan drinks 1/3 litre. How much juice is left (in litres)? =
  38. 38.7/8 − 3/4 =
  39. 39.A tank is 5/9 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  40. 40.A bottle has 3/10 litre of juice. Diya drinks 1/5 litre. How much juice is left (in litres)? =

Answer key

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

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