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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 590 · 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. 1.5/7 − 1/4 =
  2. 2.Sara has a ribbon 9/10 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  3. 3.A tank is 5/8 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  4. 4.A bottle has 7/8 litre of juice. Kabir drinks 3/4 litre. How much juice is left (in litres)? =
  5. 5.A tank is 4/5 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  6. 6.5/6 − 4/9 =
  7. 7.2/3 − 3/7 =
  8. 8.A bottle has 7/8 litre of juice. Aarav drinks 1/4 litre. How much juice is left (in litres)? =
  9. 9.A bottle has 5/9 litre of juice. Meera drinks 1/6 litre. How much juice is left (in litres)? =
  10. 10.2/3 − 1/9 =
  11. 11.A tank is 1/3 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  12. 12.2/3 − 1/7 =
  13. 13.2/3 − 1/6 =
  14. 14.5/7 − 2/3 =
  15. 15.7/8 − 1/2 =
  16. 16.Rohan has a ribbon 2/3 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  17. 17.A bottle has 5/9 litre of juice. Riya drinks 1/3 litre. How much juice is left (in litres)? =
  18. 18.A bottle has 2/3 litre of juice. Meera drinks 4/9 litre. How much juice is left (in litres)? =
  19. 19.A tank is 1/3 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  20. 20.5/8 − 1/4 =
  21. 21.Diya has a ribbon 6/7 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  22. 22.Rohan has a ribbon 2/3 m long and cuts off 5/9 m. How long is the ribbon now (in m)? =
  23. 23.2/3 − 1/5 =
  24. 24.A bottle has 5/6 litre of juice. Ishaan drinks 5/8 litre. How much juice is left (in litres)? =
  25. 25.6/7 − 1/4 =
  26. 26.Arjun has a ribbon 3/4 m long and cuts off 4/7 m. How long is the ribbon now (in m)? =
  27. 27.4/5 − 1/10 =
  28. 28.Meera has a ribbon 5/7 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  29. 29.A bottle has 1/2 litre of juice. Kabir drinks 1/8 litre. How much juice is left (in litres)? =
  30. 30.1/4 − 1/5 =
  31. 31.A tank is 4/7 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  32. 32.A bottle has 7/8 litre of juice. Riya drinks 1/6 litre. How much juice is left (in litres)? =
  33. 33.Riya has a ribbon 3/4 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  34. 34.3/8 − 1/4 =
  35. 35.A tank is 2/5 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  36. 36.A bottle has 1/2 litre of juice. Riya drinks 4/9 litre. How much juice is left (in litres)? =
  37. 37.A bottle has 1/3 litre of juice. Anaya drinks 1/10 litre. How much juice is left (in litres)? =
  38. 38.1/2 − 1/9 =
  39. 39.Vihaan has a ribbon 7/8 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  40. 40.1/4 − 1/7 =

Answer key

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

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