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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 464 · 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. 1.1/2 − 3/8 =
  2. 2.Riya has a ribbon 3/4 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  3. 3.9/10 − 2/5 =
  4. 4.2/3 − 4/7 =
  5. 5.A bottle has 1/2 litre of juice. Tara drinks 1/8 litre. How much juice is left (in litres)? =
  6. 6.A bottle has 2/3 litre of juice. Meera drinks 1/9 litre. How much juice is left (in litres)? =
  7. 7.7/9 − 1/3 =
  8. 8.1/4 − 1/7 =
  9. 9.A bottle has 5/7 litre of juice. Vihaan drinks 1/3 litre. How much juice is left (in litres)? =
  10. 10.9/10 − 3/4 =
  11. 11.A bottle has 7/9 litre of juice. Rohan drinks 2/3 litre. How much juice is left (in litres)? =
  12. 12.3/5 − 1/10 =
  13. 13.4/5 − 1/4 =
  14. 14.Kabir has a ribbon 1/3 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  15. 15.A tank is 8/9 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  16. 16.1/2 − 3/7 =
  17. 17.Meera has a ribbon 8/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  18. 18.1/4 − 1/10 =
  19. 19.A bottle has 4/5 litre of juice. Sara drinks 2/3 litre. How much juice is left (in litres)? =
  20. 20.Diya has a ribbon 2/3 m long and cuts off 5/8 m. How long is the ribbon now (in m)? =
  21. 21.A bottle has 4/5 litre of juice. Meera drinks 2/3 litre. How much juice is left (in litres)? =
  22. 22.A bottle has 2/5 litre of juice. Diya drinks 1/3 litre. How much juice is left (in litres)? =
  23. 23.4/5 − 3/10 =
  24. 24.A bottle has 5/7 litre of juice. Rohan drinks 1/4 litre. How much juice is left (in litres)? =
  25. 25.3/4 − 1/3 =
  26. 26.A bottle has 7/9 litre of juice. Diya drinks 1/3 litre. How much juice is left (in litres)? =
  27. 27.6/7 − 1/3 =
  28. 28.8/9 − 1/3 =
  29. 29.A bottle has 3/4 litre of juice. Vihaan drinks 1/5 litre. How much juice is left (in litres)? =
  30. 30.2/3 − 4/9 =
  31. 31.A tank is 1/4 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  32. 32.A bottle has 3/4 litre of juice. Kabir drinks 1/2 litre. How much juice is left (in litres)? =
  33. 33.6/7 − 1/2 =
  34. 34.A tank is 3/4 full of water. Then water filling 5/8 of the tank is used. What fraction of the tank is full now? =
  35. 35.A bottle has 2/3 litre of juice. Sara drinks 2/5 litre. How much juice is left (in litres)? =
  36. 36.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? =
  37. 37.A tank is 2/3 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  38. 38.A bottle has 5/7 litre of juice. Tara drinks 1/3 litre. How much juice is left (in litres)? =
  39. 39.A bottle has 4/7 litre of juice. Vihaan drinks 1/4 litre. How much juice is left (in litres)? =
  40. 40.1/3 − 1/10 =

Answer key

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

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