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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 706 · 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.Rohan has a ribbon 1/4 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  2. 2.8/9 − 2/3 =
  3. 3.1/2 − 1/7 =
  4. 4.5/6 − 1/4 =
  5. 5.Arjun has a ribbon 1/3 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  6. 6.Aarav has a ribbon 1/2 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  7. 7.A tank is 2/3 full of water. Then water filling 5/9 of the tank is used. What fraction of the tank is full now? =
  8. 8.Riya has a ribbon 3/5 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  9. 9.5/8 − 1/4 =
  10. 10.1/5 − 1/6 =
  11. 11.Diya has a ribbon 1/3 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  12. 12.A tank is 5/8 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  13. 13.Anaya has a ribbon 1/3 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  14. 14.A bottle has 5/7 litre of juice. Vihaan drinks 2/3 litre. How much juice is left (in litres)? =
  15. 15.A bottle has 2/5 litre of juice. Sara drinks 3/10 litre. How much juice is left (in litres)? =
  16. 16.2/3 − 3/5 =
  17. 17.Meera has a ribbon 1/2 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  18. 18.A bottle has 1/3 litre of juice. Anaya drinks 1/7 litre. How much juice is left (in litres)? =
  19. 19.5/6 − 2/9 =
  20. 20.A tank is 1/3 full of water. Then water filling 2/7 of the tank is used. What fraction of the tank is full now? =
  21. 21.2/3 − 4/9 =
  22. 22.7/10 − 1/5 =
  23. 23.A tank is 2/3 full of water. Then water filling 2/5 of the tank is used. What fraction of the tank is full now? =
  24. 24.1/4 − 1/5 =
  25. 25.2/3 − 2/9 =
  26. 26.5/6 − 4/9 =
  27. 27.A tank is 1/4 full of water. Then water filling 1/7 of the tank is used. What fraction of the tank is full now? =
  28. 28.5/7 − 1/3 =
  29. 29.5/6 − 1/9 =
  30. 30.A bottle has 2/3 litre of juice. Meera drinks 4/7 litre. How much juice is left (in litres)? =
  31. 31.Aarav has a ribbon 4/5 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  32. 32.A tank is 5/6 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  33. 33.4/5 − 7/10 =
  34. 34.Arjun has a ribbon 5/6 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  35. 35.A bottle has 7/9 litre of juice. Anaya drinks 1/6 litre. How much juice is left (in litres)? =
  36. 36.5/7 − 1/2 =
  37. 37.1/5 − 1/10 =
  38. 38.Riya has a ribbon 1/2 m long and cuts off 4/9 m. How long is the ribbon now (in m)? =
  39. 39.1/4 − 1/10 =
  40. 40.1/2 − 3/10 =

Answer key

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

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