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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 930 · 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. 1.2/3 − 2/5 =
  2. 2.A bottle has 4/5 litre of juice. Rohan drinks 7/10 litre. How much juice is left (in litres)? =
  3. 3.A bottle has 7/9 litre of juice. Ishaan drinks 2/3 litre. How much juice is left (in litres)? =
  4. 4.A tank is 3/4 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  5. 5.A tank is 7/9 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  6. 6.7/10 − 3/5 =
  7. 7.A bottle has 8/9 litre of juice. Anaya drinks 1/3 litre. How much juice is left (in litres)? =
  8. 8.7/10 − 1/6 =
  9. 9.8/9 − 2/3 =
  10. 10.2/3 − 1/10 =
  11. 11.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? =
  12. 12.3/8 − 1/4 =
  13. 13.5/6 − 1/9 =
  14. 14.1/2 − 1/7 =
  15. 15.2/3 − 1/6 =
  16. 16.Vihaan has a ribbon 9/10 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  17. 17.A bottle has 5/7 litre of juice. Riya drinks 1/2 litre. How much juice is left (in litres)? =
  18. 18.5/8 − 1/3 =
  19. 19.5/9 − 1/6 =
  20. 20.Arjun has a ribbon 4/5 m long and cuts off 3/4 m. How long is the ribbon now (in m)? =
  21. 21.A bottle has 1/2 litre of juice. Vihaan drinks 2/7 litre. How much juice is left (in litres)? =
  22. 22.Anaya has a ribbon 5/7 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  23. 23.Meera has a ribbon 3/4 m long and cuts off 4/7 m. How long is the ribbon now (in m)? =
  24. 24.Arjun has a ribbon 5/6 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  25. 25.9/10 − 3/4 =
  26. 26.Riya has a ribbon 1/2 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  27. 27.A bottle has 1/2 litre of juice. Arjun drinks 2/5 litre. How much juice is left (in litres)? =
  28. 28.5/8 − 1/6 =
  29. 29.A bottle has 5/6 litre of juice. Tara drinks 7/9 litre. How much juice is left (in litres)? =
  30. 30.1/3 − 2/7 =
  31. 31.2/7 − 1/4 =
  32. 32.5/7 − 1/2 =
  33. 33.A tank is 5/6 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  34. 34.8/9 − 5/6 =
  35. 35.3/4 − 3/8 =
  36. 36.2/3 − 5/8 =
  37. 37.4/9 − 1/3 =
  38. 38.8/9 − 1/2 =
  39. 39.Riya has a ribbon 2/3 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  40. 40.A bottle has 5/6 litre of juice. Meera drinks 2/5 litre. How much juice is left (in litres)? =

Answer key

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

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