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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 64 · 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. 1.5/6 − 3/8 =
  2. 2.A bottle has 2/3 litre of juice. Diya drinks 2/7 litre. How much juice is left (in litres)? =
  3. 3.7/9 − 2/3 =
  4. 4.A bottle has 5/6 litre of juice. Ishaan drinks 4/9 litre. How much juice is left (in litres)? =
  5. 5.3/4 − 5/7 =
  6. 6.A bottle has 3/4 litre of juice. Kabir drinks 5/8 litre. How much juice is left (in litres)? =
  7. 7.A tank is 2/3 full of water. Then water filling 5/8 of the tank is used. What fraction of the tank is full now? =
  8. 8.3/10 − 1/6 =
  9. 9.5/8 − 1/4 =
  10. 10.A bottle has 6/7 litre of juice. Vihaan drinks 1/4 litre. How much juice is left (in litres)? =
  11. 11.1/2 − 1/5 =
  12. 12.A bottle has 3/4 litre of juice. Ishaan drinks 1/8 litre. How much juice is left (in litres)? =
  13. 13.3/4 − 2/7 =
  14. 14.Vihaan has a ribbon 1/3 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  15. 15.3/4 − 1/8 =
  16. 16.A tank is 3/4 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  17. 17.A bottle has 4/5 litre of juice. Kabir drinks 2/3 litre. How much juice is left (in litres)? =
  18. 18.3/10 − 1/4 =
  19. 19.A bottle has 4/9 litre of juice. Sara drinks 1/3 litre. How much juice is left (in litres)? =
  20. 20.4/9 − 1/3 =
  21. 21.A tank is 4/5 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  22. 22.6/7 − 3/4 =
  23. 23.A bottle has 2/3 litre of juice. Vihaan drinks 1/10 litre. How much juice is left (in litres)? =
  24. 24.A tank is 3/10 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  25. 25.A bottle has 3/4 litre of juice. Kabir drinks 3/8 litre. How much juice is left (in litres)? =
  26. 26.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? =
  27. 27.2/5 − 1/4 =
  28. 28.A bottle has 6/7 litre of juice. Diya drinks 3/4 litre. How much juice is left (in litres)? =
  29. 29.7/9 − 1/3 =
  30. 30.Aarav has a ribbon 2/3 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  31. 31.Ishaan has a ribbon 6/7 m long and cuts off 3/4 m. How long is the ribbon now (in m)? =
  32. 32.A tank is 3/8 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  33. 33.7/8 − 1/4 =
  34. 34.A tank is 1/6 full of water. Then water filling 1/9 of the tank is used. What fraction of the tank is full now? =
  35. 35.4/7 − 1/3 =
  36. 36.Diya has a ribbon 2/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  37. 37.1/3 − 2/7 =
  38. 38.A tank is 6/7 full of water. Then water filling 3/4 of the tank is used. What fraction of the tank is full now? =
  39. 39.Anaya has a ribbon 8/9 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  40. 40.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? =

Answer key

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

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