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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 120 · 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.Arjun has a ribbon 2/3 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  2. 2.5/6 − 3/4 =
  3. 3.1/3 − 1/7 =
  4. 4.A bottle has 2/3 litre of juice. Riya drinks 1/5 litre. How much juice is left (in litres)? =
  5. 5.Kabir has a ribbon 2/3 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  6. 6.Riya has a ribbon 5/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  7. 7.5/6 − 2/9 =
  8. 8.1/3 − 1/6 =
  9. 9.1/2 − 2/9 =
  10. 10.5/6 − 5/9 =
  11. 11.8/9 − 1/2 =
  12. 12.Meera has a ribbon 7/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  13. 13.1/2 − 4/9 =
  14. 14.5/6 − 1/2 =
  15. 15.Aarav has a ribbon 9/10 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  16. 16.Meera has a ribbon 4/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  17. 17.4/7 − 1/4 =
  18. 18.Kabir has a ribbon 5/9 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  19. 19.6/7 − 1/2 =
  20. 20.A bottle has 2/9 litre of juice. Vihaan drinks 1/6 litre. How much juice is left (in litres)? =
  21. 21.A tank is 7/10 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  22. 22.2/3 − 2/9 =
  23. 23.A tank is 5/6 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  24. 24.Aarav has a ribbon 4/5 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  25. 25.A bottle has 8/9 litre of juice. Aarav drinks 1/3 litre. How much juice is left (in litres)? =
  26. 26.2/3 − 3/7 =
  27. 27.A tank is 7/8 full of water. Then water filling 5/6 of the tank is used. What fraction of the tank is full now? =
  28. 28.A tank is 4/5 full of water. Then water filling 7/10 of the tank is used. What fraction of the tank is full now? =
  29. 29.A bottle has 3/10 litre of juice. Tara drinks 1/4 litre. How much juice is left (in litres)? =
  30. 30.2/3 − 1/7 =
  31. 31.3/4 − 1/8 =
  32. 32.A tank is 3/4 full of water. Then water filling 1/7 of the tank is used. What fraction of the tank is full now? =
  33. 33.A bottle has 5/6 litre of juice. Kabir drinks 1/9 litre. How much juice is left (in litres)? =
  34. 34.Rohan has a ribbon 5/8 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  35. 35.A tank is 1/2 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  36. 36.3/4 − 5/7 =
  37. 37.7/10 − 1/6 =
  38. 38.7/10 − 1/2 =
  39. 39.Meera has a ribbon 1/2 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  40. 40.2/3 − 4/7 =

Answer key

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

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