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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 126 · 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. Ishaan drinks 3/10 litre. How much juice is left (in litres)? =
  2. 2.Riya has a ribbon 5/6 m long and cuts off 4/9 m. How long is the ribbon now (in m)? =
  3. 3.5/6 − 7/9 =
  4. 4.A bottle has 4/7 litre of juice. Sara drinks 1/4 litre. How much juice is left (in litres)? =
  5. 5.1/3 − 2/7 =
  6. 6.5/8 − 1/6 =
  7. 7.A tank is 3/4 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  8. 8.A bottle has 1/3 litre of juice. Arjun drinks 1/8 litre. How much juice is left (in litres)? =
  9. 9.A bottle has 1/3 litre of juice. Diya drinks 2/7 litre. How much juice is left (in litres)? =
  10. 10.9/10 − 2/3 =
  11. 11.2/7 − 1/4 =
  12. 12.1/3 − 1/6 =
  13. 13.3/4 − 2/5 =
  14. 14.4/5 − 7/10 =
  15. 15.Riya has a ribbon 3/5 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  16. 16.4/5 − 1/4 =
  17. 17.Aarav has a ribbon 5/6 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  18. 18.A tank is 6/7 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  19. 19.1/2 − 1/4 =
  20. 20.5/6 − 1/2 =
  21. 21.5/9 − 1/6 =
  22. 22.2/5 − 1/10 =
  23. 23.1/3 − 1/7 =
  24. 24.5/6 − 1/10 =
  25. 25.Kabir has a ribbon 7/8 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  26. 26.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? =
  27. 27.6/7 − 1/2 =
  28. 28.7/10 − 2/3 =
  29. 29.3/5 − 1/10 =
  30. 30.8/9 − 1/2 =
  31. 31.9/10 − 3/4 =
  32. 32.7/10 − 1/4 =
  33. 33.5/8 − 1/2 =
  34. 34.A bottle has 2/5 litre of juice. Ishaan drinks 3/10 litre. How much juice is left (in litres)? =
  35. 35.5/7 − 2/3 =
  36. 36.1/2 − 2/7 =
  37. 37.Rohan has a ribbon 7/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  38. 38.3/4 − 1/5 =
  39. 39.A bottle has 7/10 litre of juice. Anaya drinks 2/5 litre. How much juice is left (in litres)? =
  40. 40.2/3 − 1/2 =

Answer key

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

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