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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 456 · 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 2/5 litre of juice. Riya drinks 3/10 litre. How much juice is left (in litres)? =
  2. 2.Tara has a ribbon 1/2 m long and cuts off 3/7 m. How long is the ribbon now (in m)? =
  3. 3.A bottle has 1/4 litre of juice. Sara drinks 1/5 litre. How much juice is left (in litres)? =
  4. 4.A bottle has 4/5 litre of juice. Aarav drinks 2/3 litre. How much juice is left (in litres)? =
  5. 5.Aarav has a ribbon 5/6 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  6. 6.A tank is 7/10 full of water. Then water filling 2/5 of the tank is used. What fraction of the tank is full now? =
  7. 7.3/4 − 1/10 =
  8. 8.A bottle has 1/4 litre of juice. Riya drinks 1/7 litre. How much juice is left (in litres)? =
  9. 9.9/10 − 1/5 =
  10. 10.A bottle has 7/9 litre of juice. Anaya drinks 1/6 litre. How much juice is left (in litres)? =
  11. 11.A bottle has 5/6 litre of juice. Anaya drinks 3/8 litre. How much juice is left (in litres)? =
  12. 12.9/10 − 4/5 =
  13. 13.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? =
  14. 14.5/6 − 5/9 =
  15. 15.Diya has a ribbon 8/9 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  16. 16.A bottle has 2/5 litre of juice. Tara drinks 1/4 litre. How much juice is left (in litres)? =
  17. 17.A tank is 1/2 full of water. Then water filling 1/9 of the tank is used. What fraction of the tank is full now? =
  18. 18.5/6 − 3/8 =
  19. 19.A tank is 2/5 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  20. 20.1/3 − 1/7 =
  21. 21.A bottle has 3/4 litre of juice. Rohan drinks 7/10 litre. How much juice is left (in litres)? =
  22. 22.Tara has a ribbon 3/8 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  23. 23.3/5 − 1/4 =
  24. 24.3/4 − 3/7 =
  25. 25.1/2 − 1/5 =
  26. 26.1/2 − 3/8 =
  27. 27.3/5 − 1/10 =
  28. 28.A bottle has 2/3 litre of juice. Sara drinks 5/9 litre. How much juice is left (in litres)? =
  29. 29.A bottle has 5/6 litre of juice. Rohan drinks 3/8 litre. How much juice is left (in litres)? =
  30. 30.7/9 − 1/3 =
  31. 31.A bottle has 2/3 litre of juice. Rohan drinks 1/7 litre. How much juice is left (in litres)? =
  32. 32.A bottle has 4/7 litre of juice. Kabir drinks 1/2 litre. How much juice is left (in litres)? =
  33. 33.3/4 − 1/8 =
  34. 34.A bottle has 4/5 litre of juice. Rohan drinks 7/10 litre. How much juice is left (in litres)? =
  35. 35.A bottle has 2/3 litre of juice. Aarav drinks 3/7 litre. How much juice is left (in litres)? =
  36. 36.1/3 − 2/9 =
  37. 37.A tank is 5/9 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  38. 38.4/5 − 3/10 =
  39. 39.Arjun has a ribbon 4/5 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  40. 40.Kabir has a ribbon 4/5 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =

Answer key

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

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