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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 125 · 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 7/9 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  2. 2.A tank is 7/10 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  3. 3.4/5 − 3/4 =
  4. 4.A bottle has 3/4 litre of juice. Kabir drinks 2/5 litre. How much juice is left (in litres)? =
  5. 5.5/9 − 1/3 =
  6. 6.A tank is 5/9 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  7. 7.Diya has a ribbon 7/10 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  8. 8.A bottle has 1/4 litre of juice. Kabir drinks 1/5 litre. How much juice is left (in litres)? =
  9. 9.5/8 − 1/3 =
  10. 10.A bottle has 1/2 litre of juice. Kabir drinks 2/5 litre. How much juice is left (in litres)? =
  11. 11.Arjun has a ribbon 4/5 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  12. 12.4/5 − 1/4 =
  13. 13.A bottle has 3/4 litre of juice. Meera drinks 3/7 litre. How much juice is left (in litres)? =
  14. 14.3/4 − 7/10 =
  15. 15.A bottle has 1/4 litre of juice. Sara drinks 1/10 litre. How much juice is left (in litres)? =
  16. 16.2/5 − 1/4 =
  17. 17.3/5 − 3/10 =
  18. 18.Kabir has a ribbon 1/3 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  19. 19.4/5 − 3/10 =
  20. 20.4/5 − 1/3 =
  21. 21.A tank is 4/5 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  22. 22.7/8 − 1/6 =
  23. 23.A tank is 5/9 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  24. 24.A tank is 3/4 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  25. 25.A tank is 9/10 full of water. Then water filling 4/5 of the tank is used. What fraction of the tank is full now? =
  26. 26.1/2 − 2/5 =
  27. 27.3/5 − 1/6 =
  28. 28.1/4 − 1/8 =
  29. 29.7/8 − 1/2 =
  30. 30.Meera has a ribbon 7/9 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  31. 31.Rohan has a ribbon 7/8 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  32. 32.Vihaan has a ribbon 2/3 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  33. 33.A bottle has 1/4 litre of juice. Ishaan drinks 1/10 litre. How much juice is left (in litres)? =
  34. 34.4/7 − 1/3 =
  35. 35.3/4 − 1/7 =
  36. 36.A bottle has 5/6 litre of juice. Arjun drinks 1/9 litre. How much juice is left (in litres)? =
  37. 37.A bottle has 8/9 litre of juice. Tara drinks 1/6 litre. How much juice is left (in litres)? =
  38. 38.8/9 − 1/6 =
  39. 39.Ishaan has a ribbon 1/2 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  40. 40.7/10 − 2/3 =

Answer key

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

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