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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 149 · 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 6/7 litre of juice. Anaya drinks 1/4 litre. How much juice is left (in litres)? =
  2. 2.Meera has a ribbon 1/2 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  3. 3.A bottle has 3/4 litre of juice. Ishaan drinks 7/10 litre. How much juice is left (in litres)? =
  4. 4.2/3 − 1/8 =
  5. 5.4/5 − 3/4 =
  6. 6.A bottle has 9/10 litre of juice. Anaya drinks 3/5 litre. How much juice is left (in litres)? =
  7. 7.A tank is 1/2 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  8. 8.5/6 − 7/9 =
  9. 9.4/5 − 1/3 =
  10. 10.A tank is 4/5 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  11. 11.A bottle has 3/4 litre of juice. Meera drinks 5/8 litre. How much juice is left (in litres)? =
  12. 12.9/10 − 1/5 =
  13. 13.A tank is 3/4 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  14. 14.9/10 − 3/4 =
  15. 15.4/5 − 1/10 =
  16. 16.1/2 − 1/8 =
  17. 17.A bottle has 6/7 litre of juice. Sara drinks 1/2 litre. How much juice is left (in litres)? =
  18. 18.Sara has a ribbon 3/4 m long and cuts off 4/7 m. How long is the ribbon now (in m)? =
  19. 19.A tank is 3/7 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  20. 20.Arjun has a ribbon 2/3 m long and cuts off 4/7 m. How long is the ribbon now (in m)? =
  21. 21.5/6 − 1/3 =
  22. 22.3/4 − 4/7 =
  23. 23.A bottle has 3/4 litre of juice. Tara drinks 1/6 litre. How much juice is left (in litres)? =
  24. 24.7/9 − 2/3 =
  25. 25.2/3 − 1/9 =
  26. 26.Diya has a ribbon 6/7 m long and cuts off 3/4 m. How long is the ribbon now (in m)? =
  27. 27.1/2 − 2/9 =
  28. 28.A bottle has 8/9 litre of juice. Rohan drinks 2/3 litre. How much juice is left (in litres)? =
  29. 29.1/2 − 1/10 =
  30. 30.A tank is 7/8 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  31. 31.9/10 − 4/5 =
  32. 32.A tank is 4/5 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  33. 33.Meera has a ribbon 3/7 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  34. 34.A tank is 3/4 full of water. Then water filling 1/7 of the tank is used. What fraction of the tank is full now? =
  35. 35.5/8 − 1/2 =
  36. 36.A bottle has 8/9 litre of juice. Vihaan drinks 1/2 litre. How much juice is left (in litres)? =
  37. 37.A bottle has 5/7 litre of juice. Anaya drinks 1/2 litre. How much juice is left (in litres)? =
  38. 38.A bottle has 4/7 litre of juice. Meera drinks 1/3 litre. How much juice is left (in litres)? =
  39. 39.A bottle has 1/6 litre of juice. Ishaan drinks 1/8 litre. How much juice is left (in litres)? =
  40. 40.Arjun has a ribbon 4/7 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =

Answer key

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

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