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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 941 · 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.Diya has a ribbon 5/6 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  2. 2.5/6 − 1/4 =
  3. 3.A bottle has 6/7 litre of juice. Aarav drinks 1/4 litre. How much juice is left (in litres)? =
  4. 4.A tank is 1/6 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  5. 5.1/6 − 1/9 =
  6. 6.5/6 − 3/8 =
  7. 7.2/3 − 3/7 =
  8. 8.A tank is 1/3 full of water. Then water filling 1/9 of the tank is used. What fraction of the tank is full now? =
  9. 9.3/4 − 5/7 =
  10. 10.5/8 − 1/4 =
  11. 11.A bottle has 7/8 litre of juice. Vihaan drinks 1/3 litre. How much juice is left (in litres)? =
  12. 12.A bottle has 3/7 litre of juice. Tara drinks 1/3 litre. How much juice is left (in litres)? =
  13. 13.8/9 − 1/6 =
  14. 14.Riya has a ribbon 3/10 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  15. 15.2/3 − 4/7 =
  16. 16.Rohan has a ribbon 7/9 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  17. 17.Anaya has a ribbon 1/2 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  18. 18.Aarav has a ribbon 4/5 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  19. 19.6/7 − 1/3 =
  20. 20.9/10 − 1/5 =
  21. 21.9/10 − 3/4 =
  22. 22.A bottle has 2/3 litre of juice. Kabir drinks 2/7 litre. How much juice is left (in litres)? =
  23. 23.7/8 − 2/3 =
  24. 24.7/8 − 3/4 =
  25. 25.A bottle has 5/6 litre of juice. Tara drinks 2/5 litre. How much juice is left (in litres)? =
  26. 26.3/10 − 1/5 =
  27. 27.A tank is 2/9 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  28. 28.1/2 − 3/7 =
  29. 29.4/5 − 2/3 =
  30. 30.2/3 − 1/5 =
  31. 31.5/6 − 2/3 =
  32. 32.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? =
  33. 33.9/10 − 2/3 =
  34. 34.A bottle has 5/9 litre of juice. Sara drinks 1/2 litre. How much juice is left (in litres)? =
  35. 35.A bottle has 8/9 litre of juice. Meera drinks 5/6 litre. How much juice is left (in litres)? =
  36. 36.Riya has a ribbon 5/6 m long and cuts off 3/8 m. How long is the ribbon now (in m)? =
  37. 37.5/7 − 1/3 =
  38. 38.2/3 − 1/9 =
  39. 39.5/6 − 2/9 =
  40. 40.2/3 − 2/9 =

Answer key

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

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