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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 974 · 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 8/9 litre of juice. Sara drinks 5/6 litre. How much juice is left (in litres)? =
  2. 2.7/8 − 1/6 =
  3. 3.4/7 − 1/4 =
  4. 4.Vihaan has a ribbon 1/2 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  5. 5.Ishaan has a ribbon 1/2 m long and cuts off 2/9 m. How long is the ribbon now (in m)? =
  6. 6.A bottle has 2/3 litre of juice. Meera drinks 1/10 litre. How much juice is left (in litres)? =
  7. 7.1/2 − 2/5 =
  8. 8.1/2 − 2/9 =
  9. 9.A bottle has 9/10 litre of juice. Arjun drinks 5/6 litre. How much juice is left (in litres)? =
  10. 10.1/6 − 1/9 =
  11. 11.A tank is 5/6 full of water. Then water filling 1/9 of the tank is used. What fraction of the tank is full now? =
  12. 12.1/3 − 1/8 =
  13. 13.A tank is 1/3 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  14. 14.Meera has a ribbon 5/7 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  15. 15.A tank is 5/6 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  16. 16.Arjun has a ribbon 3/4 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  17. 17.2/3 − 1/6 =
  18. 18.2/3 − 3/8 =
  19. 19.2/3 − 1/8 =
  20. 20.A bottle has 1/3 litre of juice. Aarav drinks 2/9 litre. How much juice is left (in litres)? =
  21. 21.9/10 − 2/5 =
  22. 22.1/3 − 1/9 =
  23. 23.3/5 − 1/2 =
  24. 24.5/9 − 1/2 =
  25. 25.Vihaan has a ribbon 2/3 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  26. 26.5/6 − 1/3 =
  27. 27.Diya has a ribbon 2/5 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  28. 28.4/5 − 1/2 =
  29. 29.1/2 − 2/7 =
  30. 30.5/8 − 1/3 =
  31. 31.6/7 − 1/3 =
  32. 32.A bottle has 4/5 litre of juice. Vihaan drinks 1/3 litre. How much juice is left (in litres)? =
  33. 33.5/8 − 1/4 =
  34. 34.5/7 − 2/3 =
  35. 35.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? =
  36. 36.5/9 − 1/3 =
  37. 37.A bottle has 1/3 litre of juice. Meera drinks 1/7 litre. How much juice is left (in litres)? =
  38. 38.2/3 − 2/7 =
  39. 39.A bottle has 2/3 litre of juice. Rohan drinks 3/7 litre. How much juice is left (in litres)? =
  40. 40.3/5 − 1/6 =

Answer key

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

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