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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 583 · 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.Riya has a ribbon 7/8 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  2. 2.A bottle has 5/9 litre of juice. Ishaan drinks 1/2 litre. How much juice is left (in litres)? =
  3. 3.A tank is 1/2 full of water. Then water filling 3/8 of the tank is used. What fraction of the tank is full now? =
  4. 4.Kabir has a ribbon 1/6 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  5. 5.A tank is 3/5 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  6. 6.5/6 − 7/9 =
  7. 7.A bottle has 4/7 litre of juice. Arjun drinks 1/4 litre. How much juice is left (in litres)? =
  8. 8.A bottle has 2/3 litre of juice. Riya drinks 5/9 litre. How much juice is left (in litres)? =
  9. 9.5/9 − 1/3 =
  10. 10.5/9 − 1/6 =
  11. 11.A bottle has 3/5 litre of juice. Ishaan drinks 1/6 litre. How much juice is left (in litres)? =
  12. 12.5/6 − 2/5 =
  13. 13.7/10 − 2/5 =
  14. 14.1/2 − 1/7 =
  15. 15.A bottle has 5/6 litre of juice. Kabir drinks 2/3 litre. How much juice is left (in litres)? =
  16. 16.7/9 − 1/2 =
  17. 17.A tank is 3/4 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  18. 18.A bottle has 9/10 litre of juice. Meera drinks 3/4 litre. How much juice is left (in litres)? =
  19. 19.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? =
  20. 20.A bottle has 5/8 litre of juice. Riya drinks 1/3 litre. How much juice is left (in litres)? =
  21. 21.7/10 − 1/6 =
  22. 22.2/3 − 5/9 =
  23. 23.Kabir has a ribbon 1/2 m long and cuts off 2/9 m. How long is the ribbon now (in m)? =
  24. 24.4/5 − 2/3 =
  25. 25.Aarav has a ribbon 4/5 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  26. 26.5/6 − 3/8 =
  27. 27.A bottle has 5/6 litre of juice. Aarav drinks 5/8 litre. How much juice is left (in litres)? =
  28. 28.A tank is 4/5 full of water. Then water filling 7/10 of the tank is used. What fraction of the tank is full now? =
  29. 29.A bottle has 2/3 litre of juice. Tara drinks 1/7 litre. How much juice is left (in litres)? =
  30. 30.A tank is 9/10 full of water. Then water filling 4/5 of the tank is used. What fraction of the tank is full now? =
  31. 31.Diya has a ribbon 2/3 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  32. 32.A bottle has 1/2 litre of juice. Diya drinks 2/9 litre. How much juice is left (in litres)? =
  33. 33.Diya has a ribbon 4/5 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  34. 34.A bottle has 1/2 litre of juice. Kabir drinks 3/8 litre. How much juice is left (in litres)? =
  35. 35.A bottle has 6/7 litre of juice. Ishaan drinks 3/4 litre. How much juice is left (in litres)? =
  36. 36.3/4 − 1/6 =
  37. 37.Tara has a ribbon 5/6 m long and cuts off 2/9 m. How long is the ribbon now (in m)? =
  38. 38.A bottle has 5/6 litre of juice. Tara drinks 5/9 litre. How much juice is left (in litres)? =
  39. 39.2/5 − 3/10 =
  40. 40.1/2 − 3/10 =

Answer key

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

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