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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 904 · 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 1/3 full of water. Then water filling 2/7 of the tank is used. What fraction of the tank is full now? =
  2. 2.A bottle has 3/4 litre of juice. Sara drinks 1/5 litre. How much juice is left (in litres)? =
  3. 3.8/9 − 5/6 =
  4. 4.A tank is 2/3 full of water. Then water filling 4/7 of the tank is used. What fraction of the tank is full now? =
  5. 5.A bottle has 1/2 litre of juice. Kabir drinks 1/4 litre. How much juice is left (in litres)? =
  6. 6.A bottle has 1/2 litre of juice. Tara drinks 1/9 litre. How much juice is left (in litres)? =
  7. 7.A tank is 7/9 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  8. 8.A bottle has 1/4 litre of juice. Vihaan drinks 1/8 litre. How much juice is left (in litres)? =
  9. 9.2/3 − 1/8 =
  10. 10.2/5 − 1/3 =
  11. 11.5/6 − 1/9 =
  12. 12.3/4 − 1/8 =
  13. 13.A tank is 2/3 full of water. Then water filling 2/9 of the tank is used. What fraction of the tank is full now? =
  14. 14.7/9 − 1/6 =
  15. 15.9/10 − 2/5 =
  16. 16.3/4 − 1/5 =
  17. 17.7/9 − 1/2 =
  18. 18.Vihaan has a ribbon 9/10 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  19. 19.9/10 − 2/3 =
  20. 20.1/2 − 1/9 =
  21. 21.9/10 − 4/5 =
  22. 22.Kabir has a ribbon 2/5 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  23. 23.A tank is 6/7 full of water. Then water filling 3/4 of the tank is used. What fraction of the tank is full now? =
  24. 24.2/3 − 2/9 =
  25. 25.A bottle has 7/10 litre of juice. Kabir drinks 1/2 litre. How much juice is left (in litres)? =
  26. 26.A tank is 5/6 full of water. Then water filling 5/9 of the tank is used. What fraction of the tank is full now? =
  27. 27.4/5 − 1/3 =
  28. 28.2/3 − 3/8 =
  29. 29.3/4 − 3/7 =
  30. 30.3/4 − 2/7 =
  31. 31.Meera has a ribbon 2/3 m long and cuts off 3/8 m. How long is the ribbon now (in m)? =
  32. 32.8/9 − 1/6 =
  33. 33.1/2 − 2/5 =
  34. 34.5/7 − 1/3 =
  35. 35.A bottle has 1/2 litre of juice. Arjun drinks 1/10 litre. How much juice is left (in litres)? =
  36. 36.A tank is 1/3 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  37. 37.A bottle has 2/3 litre of juice. Diya drinks 1/9 litre. How much juice is left (in litres)? =
  38. 38.A tank is 1/3 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  39. 39.4/5 − 2/3 =
  40. 40.4/5 − 1/10 =

Answer key

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

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