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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 408 · 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 tank is 1/2 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  2. 2.3/4 − 1/10 =
  3. 3.Arjun has a ribbon 3/5 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  4. 4.Arjun has a ribbon 2/3 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  5. 5.5/6 − 4/9 =
  6. 6.A tank is 1/2 full of water. Then water filling 2/9 of the tank is used. What fraction of the tank is full now? =
  7. 7.A bottle has 5/6 litre of juice. Diya drinks 1/2 litre. How much juice is left (in litres)? =
  8. 8.A tank is 7/8 full of water. Then water filling 5/6 of the tank is used. What fraction of the tank is full now? =
  9. 9.3/4 − 3/10 =
  10. 10.A bottle has 3/4 litre of juice. Kabir drinks 1/10 litre. How much juice is left (in litres)? =
  11. 11.A bottle has 3/4 litre of juice. Diya drinks 2/7 litre. How much juice is left (in litres)? =
  12. 12.9/10 − 2/5 =
  13. 13.Tara has a ribbon 2/3 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  14. 14.9/10 − 3/4 =
  15. 15.3/4 − 3/8 =
  16. 16.3/4 − 1/7 =
  17. 17.A tank is 3/4 full of water. Then water filling 5/8 of the tank is used. What fraction of the tank is full now? =
  18. 18.A bottle has 2/3 litre of juice. Diya drinks 3/5 litre. How much juice is left (in litres)? =
  19. 19.Meera has a ribbon 5/6 m long and cuts off 5/9 m. How long is the ribbon now (in m)? =
  20. 20.5/6 − 5/9 =
  21. 21.3/4 − 3/5 =
  22. 22.A bottle has 4/7 litre of juice. Kabir drinks 1/2 litre. How much juice is left (in litres)? =
  23. 23.A tank is 2/3 full of water. Then water filling 3/8 of the tank is used. What fraction of the tank is full now? =
  24. 24.1/3 − 1/10 =
  25. 25.4/5 − 1/4 =
  26. 26.7/10 − 1/4 =
  27. 27.1/4 − 1/5 =
  28. 28.A bottle has 9/10 litre of juice. Tara drinks 1/4 litre. How much juice is left (in litres)? =
  29. 29.8/9 − 1/3 =
  30. 30.A tank is 7/8 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  31. 31.5/9 − 1/2 =
  32. 32.Riya has a ribbon 2/3 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  33. 33.4/7 − 1/2 =
  34. 34.5/6 − 5/8 =
  35. 35.2/3 − 2/9 =
  36. 36.6/7 − 3/4 =
  37. 37.A bottle has 5/6 litre of juice. Ishaan drinks 5/9 litre. How much juice is left (in litres)? =
  38. 38.3/7 − 1/4 =
  39. 39.A bottle has 3/4 litre of juice. Anaya drinks 5/7 litre. How much juice is left (in litres)? =
  40. 40.A bottle has 1/2 litre of juice. Tara drinks 1/6 litre. How much juice is left (in litres)? =

Answer key

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

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