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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 441 · 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. Vihaan drinks 2/5 litre. How much juice is left (in litres)? =
  2. 2.6/7 − 3/4 =
  3. 3.1/3 − 1/7 =
  4. 4.1/2 − 2/9 =
  5. 5.A bottle has 2/3 litre of juice. Aarav drinks 5/9 litre. How much juice is left (in litres)? =
  6. 6.Arjun has a ribbon 3/10 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  7. 7.A bottle has 2/3 litre of juice. Rohan drinks 5/9 litre. How much juice is left (in litres)? =
  8. 8.A bottle has 4/5 litre of juice. Tara drinks 7/10 litre. How much juice is left (in litres)? =
  9. 9.4/5 − 1/6 =
  10. 10.A bottle has 2/3 litre of juice. Anaya drinks 5/8 litre. How much juice is left (in litres)? =
  11. 11.2/3 − 1/5 =
  12. 12.9/10 − 3/4 =
  13. 13.5/6 − 3/4 =
  14. 14.3/5 − 1/2 =
  15. 15.8/9 − 1/6 =
  16. 16.9/10 − 2/3 =
  17. 17.Arjun has a ribbon 8/9 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  18. 18.5/9 − 1/3 =
  19. 19.7/10 − 3/5 =
  20. 20.3/4 − 1/5 =
  21. 21.7/9 − 1/3 =
  22. 22.2/3 − 1/8 =
  23. 23.A tank is 2/7 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  24. 24.1/2 − 2/7 =
  25. 25.Arjun has a ribbon 5/6 m long and cuts off 2/9 m. How long is the ribbon now (in m)? =
  26. 26.A tank is 6/7 full of water. Then water filling 3/4 of the tank is used. What fraction of the tank is full now? =
  27. 27.7/10 − 1/4 =
  28. 28.3/4 − 1/6 =
  29. 29.Meera has a ribbon 6/7 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  30. 30.1/3 − 2/9 =
  31. 31.9/10 − 4/5 =
  32. 32.Anaya has a ribbon 1/2 m long and cuts off 3/7 m. How long is the ribbon now (in m)? =
  33. 33.Diya has a ribbon 3/4 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  34. 34.A bottle has 1/3 litre of juice. Aarav drinks 2/9 litre. How much juice is left (in litres)? =
  35. 35.3/5 − 1/10 =
  36. 36.1/6 − 1/8 =
  37. 37.Meera has a ribbon 5/6 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  38. 38.3/4 − 5/8 =
  39. 39.6/7 − 1/3 =
  40. 40.7/10 − 2/5 =

Answer key

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

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