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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 584 · 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 − 1/7 =
  2. 2.A bottle has 2/3 litre of juice. Rohan drinks 4/9 litre. How much juice is left (in litres)? =
  3. 3.1/2 − 1/4 =
  4. 4.8/9 − 2/3 =
  5. 5.3/10 − 1/6 =
  6. 6.7/10 − 1/2 =
  7. 7.7/10 − 3/5 =
  8. 8.Vihaan has a ribbon 1/3 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  9. 9.A bottle has 5/6 litre of juice. Meera drinks 7/9 litre. How much juice is left (in litres)? =
  10. 10.1/2 − 1/9 =
  11. 11.A bottle has 3/10 litre of juice. Tara drinks 1/5 litre. How much juice is left (in litres)? =
  12. 12.A bottle has 1/2 litre of juice. Arjun drinks 1/5 litre. How much juice is left (in litres)? =
  13. 13.A bottle has 5/6 litre of juice. Ishaan drinks 7/9 litre. How much juice is left (in litres)? =
  14. 14.A tank is 6/7 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  15. 15.7/9 − 1/3 =
  16. 16.A bottle has 1/3 litre of juice. Vihaan drinks 2/9 litre. How much juice is left (in litres)? =
  17. 17.7/8 − 1/6 =
  18. 18.A bottle has 1/2 litre of juice. Riya drinks 1/5 litre. How much juice is left (in litres)? =
  19. 19.6/7 − 1/2 =
  20. 20.A bottle has 9/10 litre of juice. Sara drinks 1/3 litre. How much juice is left (in litres)? =
  21. 21.1/3 − 3/10 =
  22. 22.5/6 − 4/9 =
  23. 23.5/6 − 5/8 =
  24. 24.2/3 − 4/9 =
  25. 25.A bottle has 1/3 litre of juice. Ishaan drinks 2/7 litre. How much juice is left (in litres)? =
  26. 26.A bottle has 5/6 litre of juice. Arjun drinks 1/4 litre. How much juice is left (in litres)? =
  27. 27.A bottle has 8/9 litre of juice. Arjun drinks 1/6 litre. How much juice is left (in litres)? =
  28. 28.A bottle has 4/5 litre of juice. Arjun drinks 3/4 litre. How much juice is left (in litres)? =
  29. 29.5/6 − 4/5 =
  30. 30.A tank is 7/8 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  31. 31.5/6 − 2/5 =
  32. 32.5/9 − 1/2 =
  33. 33.1/2 − 3/8 =
  34. 34.Ishaan has a ribbon 3/4 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  35. 35.3/4 − 5/7 =
  36. 36.Vihaan has a ribbon 6/7 m long and cuts off 3/4 m. How long is the ribbon now (in m)? =
  37. 37.3/4 − 3/5 =
  38. 38.A bottle has 9/10 litre of juice. Diya drinks 1/6 litre. How much juice is left (in litres)? =
  39. 39.Aarav has a ribbon 3/10 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  40. 40.5/8 − 1/3 =

Answer key

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

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