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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 454 · 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.Ishaan has a ribbon 8/9 m long and cuts off 5/6 m. How long is the ribbon now (in m)? =
  2. 2.Arjun has a ribbon 5/6 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  3. 3.5/8 − 1/3 =
  4. 4.3/8 − 1/3 =
  5. 5.6/7 − 3/4 =
  6. 6.A bottle has 3/10 litre of juice. Kabir drinks 1/5 litre. How much juice is left (in litres)? =
  7. 7.A bottle has 5/7 litre of juice. Anaya drinks 1/4 litre. How much juice is left (in litres)? =
  8. 8.1/3 − 1/4 =
  9. 9.A bottle has 4/7 litre of juice. Sara drinks 1/2 litre. How much juice is left (in litres)? =
  10. 10.1/2 − 1/5 =
  11. 11.4/5 − 1/2 =
  12. 12.5/6 − 3/4 =
  13. 13.Aarav has a ribbon 2/3 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  14. 14.1/3 − 1/10 =
  15. 15.A bottle has 1/2 litre of juice. Kabir drinks 1/7 litre. How much juice is left (in litres)? =
  16. 16.5/6 − 4/9 =
  17. 17.Kabir has a ribbon 2/7 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  18. 18.5/6 − 1/8 =
  19. 19.A bottle has 1/2 litre of juice. Sara drinks 1/7 litre. How much juice is left (in litres)? =
  20. 20.A bottle has 4/5 litre of juice. Ishaan drinks 1/3 litre. How much juice is left (in litres)? =
  21. 21.Sara has a ribbon 1/2 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  22. 22.A tank is 4/9 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  23. 23.Diya has a ribbon 6/7 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  24. 24.1/2 − 2/7 =
  25. 25.3/7 − 1/3 =
  26. 26.Vihaan has a ribbon 9/10 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  27. 27.1/5 − 1/6 =
  28. 28.A tank is 4/7 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  29. 29.Diya has a ribbon 3/10 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  30. 30.A bottle has 2/9 litre of juice. Riya drinks 1/6 litre. How much juice is left (in litres)? =
  31. 31.A bottle has 2/3 litre of juice. Sara drinks 2/9 litre. How much juice is left (in litres)? =
  32. 32.Riya has a ribbon 9/10 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  33. 33.1/3 − 2/9 =
  34. 34.A bottle has 3/5 litre of juice. Meera drinks 1/4 litre. How much juice is left (in litres)? =
  35. 35.A bottle has 1/2 litre of juice. Sara drinks 1/6 litre. How much juice is left (in litres)? =
  36. 36.7/8 − 3/4 =
  37. 37.A bottle has 1/2 litre of juice. Ishaan drinks 3/8 litre. How much juice is left (in litres)? =
  38. 38.9/10 − 1/5 =
  39. 39.A bottle has 7/8 litre of juice. Arjun drinks 5/6 litre. How much juice is left (in litres)? =
  40. 40.2/3 − 1/10 =

Answer key

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

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