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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 558 · 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 bottle has 2/3 litre of juice. Meera drinks 4/7 litre. How much juice is left (in litres)? =
  2. 2.6/7 − 1/2 =
  3. 3.1/3 − 1/5 =
  4. 4.5/9 − 1/2 =
  5. 5.Ishaan has a ribbon 3/4 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  6. 6.A tank is 1/5 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  7. 7.3/4 − 7/10 =
  8. 8.A tank is 1/3 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  9. 9.A bottle has 5/8 litre of juice. Arjun drinks 1/4 litre. How much juice is left (in litres)? =
  10. 10.Arjun has a ribbon 2/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  11. 11.2/3 − 2/9 =
  12. 12.Kabir has a ribbon 8/9 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  13. 13.A tank is 5/6 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  14. 14.4/5 − 1/10 =
  15. 15.A bottle has 5/9 litre of juice. Ishaan drinks 1/2 litre. How much juice is left (in litres)? =
  16. 16.5/6 − 7/9 =
  17. 17.A bottle has 5/9 litre of juice. Anaya drinks 1/2 litre. How much juice is left (in litres)? =
  18. 18.9/10 − 5/6 =
  19. 19.7/9 − 1/2 =
  20. 20.A bottle has 7/9 litre of juice. Tara drinks 1/6 litre. How much juice is left (in litres)? =
  21. 21.A bottle has 4/5 litre of juice. Ishaan drinks 1/3 litre. How much juice is left (in litres)? =
  22. 22.5/8 − 1/3 =
  23. 23.1/6 − 1/8 =
  24. 24.A bottle has 7/9 litre of juice. Anaya drinks 1/2 litre. How much juice is left (in litres)? =
  25. 25.5/6 − 1/5 =
  26. 26.4/5 − 1/6 =
  27. 27.2/5 − 1/10 =
  28. 28.Arjun has a ribbon 5/7 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  29. 29.2/3 − 2/7 =
  30. 30.7/8 − 1/4 =
  31. 31.1/2 − 3/10 =
  32. 32.5/7 − 1/3 =
  33. 33.1/2 − 3/7 =
  34. 34.2/3 − 4/7 =
  35. 35.1/2 − 2/9 =
  36. 36.1/3 − 2/7 =
  37. 37.A bottle has 3/5 litre of juice. Anaya drinks 1/3 litre. How much juice is left (in litres)? =
  38. 38.A bottle has 3/4 litre of juice. Kabir drinks 1/7 litre. How much juice is left (in litres)? =
  39. 39.3/10 − 1/5 =
  40. 40.3/4 − 1/10 =

Answer key

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

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