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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 534 · 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 1/2 litre of juice. Arjun drinks 3/10 litre. How much juice is left (in litres)? =
  2. 2.A bottle has 8/9 litre of juice. Ishaan drinks 1/2 litre. How much juice is left (in litres)? =
  3. 3.A tank is 1/6 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  4. 4.A tank is 2/5 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  5. 5.4/7 − 1/4 =
  6. 6.7/8 − 1/3 =
  7. 7.A bottle has 3/5 litre of juice. Diya drinks 1/3 litre. How much juice is left (in litres)? =
  8. 8.1/2 − 2/7 =
  9. 9.A bottle has 8/9 litre of juice. Kabir drinks 1/6 litre. How much juice is left (in litres)? =
  10. 10.A bottle has 4/9 litre of juice. Riya drinks 1/6 litre. How much juice is left (in litres)? =
  11. 11.3/4 − 3/7 =
  12. 12.A bottle has 2/3 litre of juice. Riya drinks 3/5 litre. How much juice is left (in litres)? =
  13. 13.8/9 − 1/3 =
  14. 14.5/6 − 5/9 =
  15. 15.1/2 − 2/9 =
  16. 16.3/4 − 3/10 =
  17. 17.7/10 − 1/2 =
  18. 18.A tank is 2/3 full of water. Then water filling 3/8 of the tank is used. What fraction of the tank is full now? =
  19. 19.3/10 − 1/5 =
  20. 20.1/2 − 3/10 =
  21. 21.4/5 − 1/4 =
  22. 22.3/7 − 1/4 =
  23. 23.Meera has a ribbon 4/5 m long and cuts off 3/4 m. How long is the ribbon now (in m)? =
  24. 24.5/6 − 5/8 =
  25. 25.A bottle has 1/4 litre of juice. Tara drinks 1/5 litre. How much juice is left (in litres)? =
  26. 26.A tank is 8/9 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  27. 27.A bottle has 5/7 litre of juice. Tara drinks 1/3 litre. How much juice is left (in litres)? =
  28. 28.3/7 − 1/3 =
  29. 29.3/4 − 3/5 =
  30. 30.1/4 − 1/10 =
  31. 31.A bottle has 5/6 litre of juice. Rohan drinks 7/9 litre. How much juice is left (in litres)? =
  32. 32.5/7 − 1/2 =
  33. 33.A tank is 3/4 full of water. Then water filling 5/8 of the tank is used. What fraction of the tank is full now? =
  34. 34.A tank is 3/4 full of water. Then water filling 2/5 of the tank is used. What fraction of the tank is full now? =
  35. 35.7/10 − 1/5 =
  36. 36.3/8 − 1/4 =
  37. 37.4/5 − 3/10 =
  38. 38.A tank is 2/3 full of water. Then water filling 5/9 of the tank is used. What fraction of the tank is full now? =
  39. 39.Diya has a ribbon 5/6 m long and cuts off 2/9 m. How long is the ribbon now (in m)? =
  40. 40.A bottle has 3/7 litre of juice. Ishaan drinks 1/3 litre. How much juice is left (in litres)? =

Answer key

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

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