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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 179 · 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.Aarav has a ribbon 4/5 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  2. 2.A bottle has 3/7 litre of juice. Kabir drinks 1/4 litre. How much juice is left (in litres)? =
  3. 3.5/6 − 5/9 =
  4. 4.Riya has a ribbon 7/8 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  5. 5.5/6 − 2/5 =
  6. 6.A tank is 1/2 full of water. Then water filling 2/7 of the tank is used. What fraction of the tank is full now? =
  7. 7.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? =
  8. 8.A bottle has 5/7 litre of juice. Riya drinks 2/3 litre. How much juice is left (in litres)? =
  9. 9.A tank is 1/2 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  10. 10.A tank is 9/10 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  11. 11.Tara has a ribbon 9/10 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  12. 12.4/5 − 1/4 =
  13. 13.1/2 − 3/8 =
  14. 14.A bottle has 1/2 litre of juice. Riya drinks 3/7 litre. How much juice is left (in litres)? =
  15. 15.Diya has a ribbon 7/8 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  16. 16.2/3 − 2/7 =
  17. 17.3/5 − 1/2 =
  18. 18.1/2 − 4/9 =
  19. 19.A bottle has 5/6 litre of juice. Kabir drinks 4/9 litre. How much juice is left (in litres)? =
  20. 20.2/3 − 1/7 =
  21. 21.3/4 − 5/8 =
  22. 22.A bottle has 7/10 litre of juice. Arjun drinks 2/5 litre. How much juice is left (in litres)? =
  23. 23.A bottle has 7/10 litre of juice. Aarav drinks 1/4 litre. How much juice is left (in litres)? =
  24. 24.7/10 − 1/3 =
  25. 25.2/3 − 1/5 =
  26. 26.9/10 − 1/6 =
  27. 27.Tara has a ribbon 7/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  28. 28.5/6 − 2/3 =
  29. 29.7/8 − 1/3 =
  30. 30.Anaya has a ribbon 3/4 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  31. 31.A bottle has 8/9 litre of juice. Aarav drinks 5/6 litre. How much juice is left (in litres)? =
  32. 32.Sara has a ribbon 2/5 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  33. 33.5/6 − 1/2 =
  34. 34.A bottle has 8/9 litre of juice. Kabir drinks 5/6 litre. How much juice is left (in litres)? =
  35. 35.A tank is 9/10 full of water. Then water filling 3/5 of the tank is used. What fraction of the tank is full now? =
  36. 36.7/10 − 2/5 =
  37. 37.Aarav has a ribbon 1/4 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  38. 38.2/3 − 2/5 =
  39. 39.3/4 − 1/6 =
  40. 40.9/10 − 3/5 =

Answer key

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

Free fractions lessons, practice and worksheets at talentjr.in/fractions-for-kids