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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 617 · 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. 1.3/5 − 1/6 =
  2. 2.4/5 − 2/3 =
  3. 3.Diya has a ribbon 2/3 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  4. 4.A bottle has 1/2 litre of juice. Sara drinks 2/7 litre. How much juice is left (in litres)? =
  5. 5.9/10 − 5/6 =
  6. 6.8/9 − 1/2 =
  7. 7.3/4 − 1/2 =
  8. 8.7/9 − 1/2 =
  9. 9.5/7 − 1/2 =
  10. 10.Tara has a ribbon 5/6 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  11. 11.A tank is 1/6 full of water. Then water filling 1/9 of the tank is used. What fraction of the tank is full now? =
  12. 12.Diya has a ribbon 1/2 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  13. 13.2/3 − 3/7 =
  14. 14.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? =
  15. 15.Vihaan has a ribbon 2/3 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  16. 16.A bottle has 4/5 litre of juice. Kabir drinks 2/3 litre. How much juice is left (in litres)? =
  17. 17.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? =
  18. 18.1/3 − 1/9 =
  19. 19.Vihaan has a ribbon 3/5 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  20. 20.6/7 − 1/4 =
  21. 21.3/10 − 1/5 =
  22. 22.A tank is 5/7 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  23. 23.A bottle has 3/4 litre of juice. Rohan drinks 4/7 litre. How much juice is left (in litres)? =
  24. 24.A tank is 5/9 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  25. 25.4/7 − 1/3 =
  26. 26.2/3 − 1/9 =
  27. 27.3/5 − 1/3 =
  28. 28.7/9 − 1/6 =
  29. 29.Kabir has a ribbon 8/9 m long and cuts off 5/6 m. How long is the ribbon now (in m)? =
  30. 30.5/6 − 4/9 =
  31. 31.5/6 − 4/5 =
  32. 32.A bottle has 4/9 litre of juice. Riya drinks 1/6 litre. How much juice is left (in litres)? =
  33. 33.A tank is 5/9 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  34. 34.1/3 − 1/5 =
  35. 35.Aarav has a ribbon 2/3 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  36. 36.9/10 − 1/5 =
  37. 37.A tank is 3/10 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  38. 38.1/4 − 1/10 =
  39. 39.A bottle has 8/9 litre of juice. Meera drinks 1/2 litre. How much juice is left (in litres)? =
  40. 40.5/6 − 2/9 =

Answer key

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

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