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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 894 · 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.Tara has a ribbon 1/3 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  2. 2.3/4 − 2/3 =
  3. 3.5/9 − 1/3 =
  4. 4.3/5 − 1/2 =
  5. 5.4/5 − 1/4 =
  6. 6.Vihaan has a ribbon 2/3 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  7. 7.A tank is 1/2 full of water. Then water filling 3/7 of the tank is used. What fraction of the tank is full now? =
  8. 8.A bottle has 1/3 litre of juice. Sara drinks 3/10 litre. How much juice is left (in litres)? =
  9. 9.A bottle has 5/6 litre of juice. Meera drinks 1/10 litre. How much juice is left (in litres)? =
  10. 10.Rohan has a ribbon 1/3 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  11. 11.1/3 − 1/5 =
  12. 12.2/5 − 1/6 =
  13. 13.A bottle has 2/3 litre of juice. Diya drinks 1/10 litre. How much juice is left (in litres)? =
  14. 14.7/10 − 3/5 =
  15. 15.2/7 − 1/4 =
  16. 16.A bottle has 1/2 litre of juice. Diya drinks 1/5 litre. How much juice is left (in litres)? =
  17. 17.5/8 − 1/4 =
  18. 18.A bottle has 3/5 litre of juice. Rohan drinks 1/4 litre. How much juice is left (in litres)? =
  19. 19.5/7 − 2/3 =
  20. 20.A bottle has 5/6 litre of juice. Ishaan drinks 4/9 litre. How much juice is left (in litres)? =
  21. 21.2/3 − 4/9 =
  22. 22.A bottle has 8/9 litre of juice. Meera drinks 1/2 litre. How much juice is left (in litres)? =
  23. 23.3/4 − 5/8 =
  24. 24.5/6 − 1/9 =
  25. 25.9/10 − 4/5 =
  26. 26.1/2 − 4/9 =
  27. 27.Tara has a ribbon 1/3 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  28. 28.6/7 − 2/3 =
  29. 29.A bottle has 9/10 litre of juice. Tara drinks 1/6 litre. How much juice is left (in litres)? =
  30. 30.A bottle has 1/5 litre of juice. Riya drinks 1/6 litre. How much juice is left (in litres)? =
  31. 31.Riya has a ribbon 5/6 m long and cuts off 5/9 m. How long is the ribbon now (in m)? =
  32. 32.A bottle has 3/7 litre of juice. Vihaan drinks 1/3 litre. How much juice is left (in litres)? =
  33. 33.A bottle has 7/9 litre of juice. Arjun drinks 1/6 litre. How much juice is left (in litres)? =
  34. 34.A bottle has 3/4 litre of juice. Sara drinks 3/8 litre. How much juice is left (in litres)? =
  35. 35.A bottle has 5/6 litre of juice. Sara drinks 1/10 litre. How much juice is left (in litres)? =
  36. 36.1/4 − 1/5 =
  37. 37.A tank is 2/3 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  38. 38.A tank is 7/10 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  39. 39.1/6 − 1/10 =
  40. 40.A bottle has 5/7 litre of juice. Aarav drinks 1/3 litre. How much juice is left (in litres)? =

Answer key

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

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