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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 196 · 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. 1.5/6 − 5/9 =
  2. 2.A bottle has 2/3 litre of juice. Meera drinks 2/5 litre. How much juice is left (in litres)? =
  3. 3.1/3 − 1/10 =
  4. 4.A bottle has 2/3 litre of juice. Rohan drinks 3/7 litre. How much juice is left (in litres)? =
  5. 5.Kabir has a ribbon 2/3 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  6. 6.3/8 − 1/4 =
  7. 7.A tank is 9/10 full of water. Then water filling 3/4 of the tank is used. What fraction of the tank is full now? =
  8. 8.1/3 − 2/7 =
  9. 9.A bottle has 2/3 litre of juice. Riya drinks 3/5 litre. How much juice is left (in litres)? =
  10. 10.1/2 − 1/5 =
  11. 11.5/9 − 1/6 =
  12. 12.8/9 − 5/6 =
  13. 13.A tank is 3/5 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  14. 14.A bottle has 9/10 litre of juice. Rohan drinks 2/5 litre. How much juice is left (in litres)? =
  15. 15.7/8 − 1/4 =
  16. 16.Tara has a ribbon 9/10 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  17. 17.2/3 − 1/5 =
  18. 18.Vihaan has a ribbon 1/4 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  19. 19.1/4 − 1/7 =
  20. 20.5/6 − 1/5 =
  21. 21.Rohan has a ribbon 7/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  22. 22.1/2 − 2/5 =
  23. 23.A tank is 9/10 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  24. 24.7/10 − 3/5 =
  25. 25.A bottle has 5/7 litre of juice. Rohan drinks 1/2 litre. How much juice is left (in litres)? =
  26. 26.3/8 − 1/3 =
  27. 27.Arjun has a ribbon 1/2 m long and cuts off 4/9 m. How long is the ribbon now (in m)? =
  28. 28.A tank is 1/3 full of water. Then water filling 1/9 of the tank is used. What fraction of the tank is full now? =
  29. 29.A bottle has 4/7 litre of juice. Aarav drinks 1/2 litre. How much juice is left (in litres)? =
  30. 30.5/6 − 3/4 =
  31. 31.Vihaan has a ribbon 7/9 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  32. 32.9/10 − 1/5 =
  33. 33.2/3 − 2/7 =
  34. 34.7/8 − 5/6 =
  35. 35.5/7 − 1/4 =
  36. 36.6/7 − 1/4 =
  37. 37.1/2 − 2/9 =
  38. 38.A bottle has 1/5 litre of juice. Arjun drinks 1/10 litre. How much juice is left (in litres)? =
  39. 39.5/9 − 1/3 =
  40. 40.Meera has a ribbon 7/9 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =

Answer key

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

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