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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 964 · 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. 1.1/2 − 3/7 =
  2. 2.1/3 − 1/9 =
  3. 3.Kabir has a ribbon 7/8 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  4. 4.A tank is 4/7 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  5. 5.A bottle has 7/8 litre of juice. Rohan drinks 3/4 litre. How much juice is left (in litres)? =
  6. 6.5/7 − 2/3 =
  7. 7.7/9 − 2/3 =
  8. 8.5/8 − 1/4 =
  9. 9.6/7 − 2/3 =
  10. 10.A bottle has 2/3 litre of juice. Riya drinks 2/7 litre. How much juice is left (in litres)? =
  11. 11.A tank is 9/10 full of water. Then water filling 5/6 of the tank is used. What fraction of the tank is full now? =
  12. 12.5/9 − 1/6 =
  13. 13.3/8 − 1/4 =
  14. 14.4/7 − 1/2 =
  15. 15.A tank is 4/5 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  16. 16.A bottle has 4/7 litre of juice. Vihaan drinks 1/2 litre. How much juice is left (in litres)? =
  17. 17.A tank is 5/6 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  18. 18.A bottle has 9/10 litre of juice. Meera drinks 2/5 litre. How much juice is left (in litres)? =
  19. 19.9/10 − 1/6 =
  20. 20.1/2 − 2/9 =
  21. 21.3/10 − 1/5 =
  22. 22.1/2 − 1/3 =
  23. 23.3/4 − 1/7 =
  24. 24.Rohan has a ribbon 5/9 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  25. 25.5/6 − 1/10 =
  26. 26.5/7 − 1/3 =
  27. 27.Meera has a ribbon 2/3 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  28. 28.2/3 − 1/9 =
  29. 29.Ishaan has a ribbon 3/5 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  30. 30.3/4 − 3/5 =
  31. 31.1/3 − 2/9 =
  32. 32.A bottle has 5/6 litre of juice. Sara drinks 3/4 litre. How much juice is left (in litres)? =
  33. 33.9/10 − 1/3 =
  34. 34.A tank is 4/5 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  35. 35.Arjun has a ribbon 1/2 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  36. 36.A tank is 9/10 full of water. Then water filling 3/5 of the tank is used. What fraction of the tank is full now? =
  37. 37.Arjun has a ribbon 1/3 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  38. 38.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? =
  39. 39.A bottle has 7/10 litre of juice. Anaya drinks 3/5 litre. How much juice is left (in litres)? =
  40. 40.A tank is 2/3 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =

Answer key

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

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