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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 14 · 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. Anaya drinks 1/10 litre. How much juice is left (in litres)? =
  2. 2.A bottle has 9/10 litre of juice. Meera drinks 2/3 litre. How much juice is left (in litres)? =
  3. 3.A bottle has 1/2 litre of juice. Riya drinks 3/7 litre. How much juice is left (in litres)? =
  4. 4.A bottle has 3/10 litre of juice. Aarav drinks 1/4 litre. How much juice is left (in litres)? =
  5. 5.3/7 − 1/4 =
  6. 6.A bottle has 4/5 litre of juice. Meera drinks 7/10 litre. How much juice is left (in litres)? =
  7. 7.A tank is 5/6 full of water. Then water filling 4/9 of the tank is used. What fraction of the tank is full now? =
  8. 8.3/7 − 1/3 =
  9. 9.A bottle has 5/9 litre of juice. Diya drinks 1/3 litre. How much juice is left (in litres)? =
  10. 10.4/7 − 1/3 =
  11. 11.A bottle has 1/3 litre of juice. Arjun drinks 2/9 litre. How much juice is left (in litres)? =
  12. 12.A bottle has 7/9 litre of juice. Kabir drinks 2/3 litre. How much juice is left (in litres)? =
  13. 13.3/8 − 1/3 =
  14. 14.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? =
  15. 15.Aarav has a ribbon 3/4 m long and cuts off 3/8 m. How long is the ribbon now (in m)? =
  16. 16.Ishaan has a ribbon 2/3 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  17. 17.7/8 − 1/6 =
  18. 18.9/10 − 1/2 =
  19. 19.1/2 − 4/9 =
  20. 20.A bottle has 1/2 litre of juice. Meera drinks 2/5 litre. How much juice is left (in litres)? =
  21. 21.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? =
  22. 22.A tank is 5/8 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  23. 23.A tank is 5/7 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  24. 24.A bottle has 5/6 litre of juice. Anaya drinks 7/10 litre. How much juice is left (in litres)? =
  25. 25.A bottle has 9/10 litre of juice. Kabir drinks 3/4 litre. How much juice is left (in litres)? =
  26. 26.Aarav has a ribbon 2/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  27. 27.6/7 − 3/4 =
  28. 28.8/9 − 1/2 =
  29. 29.A bottle has 3/8 litre of juice. Kabir drinks 1/6 litre. How much juice is left (in litres)? =
  30. 30.Sara has a ribbon 5/8 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  31. 31.5/6 − 5/9 =
  32. 32.Rohan has a ribbon 5/7 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  33. 33.4/9 − 1/3 =
  34. 34.7/8 − 1/2 =
  35. 35.Kabir has a ribbon 5/8 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  36. 36.2/3 − 3/7 =
  37. 37.Tara has a ribbon 1/2 m long and cuts off 4/9 m. How long is the ribbon now (in m)? =
  38. 38.A bottle has 5/6 litre of juice. Meera drinks 3/5 litre. How much juice is left (in litres)? =
  39. 39.5/9 − 1/2 =
  40. 40.1/3 − 1/7 =

Answer key

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

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