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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 87 · 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. 1.7/9 − 2/3 =
  2. 2.A bottle has 5/7 litre of juice. Sara drinks 1/3 litre. How much juice is left (in litres)? =
  3. 3.A bottle has 5/6 litre of juice. Arjun drinks 1/10 litre. How much juice is left (in litres)? =
  4. 4.Anaya has a ribbon 1/2 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  5. 5.Sara has a ribbon 5/6 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  6. 6.2/5 − 1/6 =
  7. 7.A bottle has 2/9 litre of juice. Diya drinks 1/6 litre. How much juice is left (in litres)? =
  8. 8.A tank is 6/7 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  9. 9.5/8 − 1/2 =
  10. 10.A bottle has 2/3 litre of juice. Tara drinks 5/9 litre. How much juice is left (in litres)? =
  11. 11.Kabir has a ribbon 8/9 m long and cuts off 5/6 m. How long is the ribbon now (in m)? =
  12. 12.3/4 − 5/7 =
  13. 13.2/3 − 1/7 =
  14. 14.5/8 − 1/4 =
  15. 15.4/7 − 1/4 =
  16. 16.1/4 − 1/7 =
  17. 17.5/6 − 4/5 =
  18. 18.A bottle has 8/9 litre of juice. Ishaan drinks 2/3 litre. How much juice is left (in litres)? =
  19. 19.A bottle has 5/6 litre of juice. Arjun drinks 3/5 litre. How much juice is left (in litres)? =
  20. 20.Arjun has a ribbon 7/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  21. 21.Meera has a ribbon 7/9 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  22. 22.1/2 − 2/5 =
  23. 23.Riya has a ribbon 7/10 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  24. 24.A bottle has 7/9 litre of juice. Kabir drinks 1/6 litre. How much juice is left (in litres)? =
  25. 25.1/2 − 2/9 =
  26. 26.A bottle has 5/7 litre of juice. Meera drinks 1/2 litre. How much juice is left (in litres)? =
  27. 27.A tank is 2/3 full of water. Then water filling 2/7 of the tank is used. What fraction of the tank is full now? =
  28. 28.A bottle has 3/4 litre of juice. Tara drinks 3/10 litre. How much juice is left (in litres)? =
  29. 29.1/3 − 2/9 =
  30. 30.3/4 − 1/10 =
  31. 31.2/5 − 1/10 =
  32. 32.A bottle has 8/9 litre of juice. Meera drinks 5/6 litre. How much juice is left (in litres)? =
  33. 33.2/3 − 3/10 =
  34. 34.Aarav has a ribbon 1/2 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  35. 35.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? =
  36. 36.Arjun has a ribbon 7/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  37. 37.Vihaan has a ribbon 2/5 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  38. 38.Aarav has a ribbon 1/2 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  39. 39.7/10 − 1/4 =
  40. 40.A bottle has 5/8 litre of juice. Anaya drinks 1/4 litre. How much juice is left (in litres)? =

Answer key

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

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