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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 194 · 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. 1.3/10 − 1/5 =
  2. 2.A tank is 6/7 full of water. Then water filling 3/4 of the tank is used. What fraction of the tank is full now? =
  3. 3.A bottle has 2/3 litre of juice. Tara drinks 2/7 litre. How much juice is left (in litres)? =
  4. 4.A bottle has 1/4 litre of juice. Rohan drinks 1/10 litre. How much juice is left (in litres)? =
  5. 5.Vihaan has a ribbon 1/3 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  6. 6.A tank is 4/9 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  7. 7.Tara has a ribbon 2/3 m long and cuts off 4/7 m. How long is the ribbon now (in m)? =
  8. 8.5/6 − 2/9 =
  9. 9.2/3 − 3/8 =
  10. 10.A tank is 4/5 full of water. Then water filling 3/4 of the tank is used. What fraction of the tank is full now? =
  11. 11.3/5 − 1/6 =
  12. 12.7/10 − 3/5 =
  13. 13.3/7 − 1/3 =
  14. 14.9/10 − 2/5 =
  15. 15.A bottle has 7/9 litre of juice. Riya drinks 1/2 litre. How much juice is left (in litres)? =
  16. 16.1/4 − 1/7 =
  17. 17.7/9 − 1/3 =
  18. 18.A tank is 2/3 full of water. Then water filling 2/7 of the tank is used. What fraction of the tank is full now? =
  19. 19.1/2 − 1/10 =
  20. 20.7/10 − 2/3 =
  21. 21.Ishaan has a ribbon 5/6 m long and cuts off 4/9 m. How long is the ribbon now (in m)? =
  22. 22.5/6 − 2/5 =
  23. 23.A bottle has 2/7 litre of juice. Aarav drinks 1/4 litre. How much juice is left (in litres)? =
  24. 24.1/3 − 3/10 =
  25. 25.A bottle has 5/8 litre of juice. Meera drinks 1/2 litre. How much juice is left (in litres)? =
  26. 26.Anaya has a ribbon 1/6 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  27. 27.1/3 − 1/7 =
  28. 28.5/9 − 1/6 =
  29. 29.Riya has a ribbon 3/7 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  30. 30.A bottle has 1/2 litre of juice. Diya drinks 2/7 litre. How much juice is left (in litres)? =
  31. 31.1/2 − 1/9 =
  32. 32.6/7 − 1/3 =
  33. 33.3/4 − 2/7 =
  34. 34.5/6 − 1/3 =
  35. 35.Sara has a ribbon 1/6 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  36. 36.A bottle has 8/9 litre of juice. Tara drinks 1/2 litre. How much juice is left (in litres)? =
  37. 37.3/4 − 1/5 =
  38. 38.3/4 − 5/7 =
  39. 39.1/2 − 4/9 =
  40. 40.2/3 − 1/8 =

Answer key

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

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