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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 68 · 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.Aarav has a ribbon 4/5 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  2. 2.5/6 − 5/9 =
  3. 3.4/5 − 1/6 =
  4. 4.8/9 − 1/2 =
  5. 5.A bottle has 1/6 litre of juice. Sara drinks 1/8 litre. How much juice is left (in litres)? =
  6. 6.7/10 − 3/5 =
  7. 7.A tank is 9/10 full of water. Then water filling 2/5 of the tank is used. What fraction of the tank is full now? =
  8. 8.2/5 − 1/4 =
  9. 9.A tank is 5/6 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  10. 10.1/3 − 1/10 =
  11. 11.1/2 − 2/5 =
  12. 12.Rohan has a ribbon 3/4 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  13. 13.Ishaan has a ribbon 2/3 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  14. 14.A bottle has 3/4 litre of juice. Kabir drinks 7/10 litre. How much juice is left (in litres)? =
  15. 15.A bottle has 2/3 litre of juice. Meera drinks 3/10 litre. How much juice is left (in litres)? =
  16. 16.6/7 − 3/4 =
  17. 17.1/3 − 1/5 =
  18. 18.8/9 − 1/6 =
  19. 19.A tank is 3/5 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  20. 20.9/10 − 3/5 =
  21. 21.Sara has a ribbon 4/5 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  22. 22.A tank is 2/3 full of water. Then water filling 2/9 of the tank is used. What fraction of the tank is full now? =
  23. 23.Arjun has a ribbon 4/7 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  24. 24.Ishaan has a ribbon 3/8 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  25. 25.A bottle has 3/5 litre of juice. Arjun drinks 1/2 litre. How much juice is left (in litres)? =
  26. 26.7/9 − 1/2 =
  27. 27.Diya has a ribbon 9/10 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  28. 28.A tank is 2/3 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  29. 29.A bottle has 3/4 litre of juice. Anaya drinks 3/8 litre. How much juice is left (in litres)? =
  30. 30.4/5 − 1/2 =
  31. 31.A bottle has 3/4 litre of juice. Meera drinks 3/10 litre. How much juice is left (in litres)? =
  32. 32.A bottle has 1/2 litre of juice. Diya drinks 2/5 litre. How much juice is left (in litres)? =
  33. 33.Riya has a ribbon 7/8 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  34. 34.A bottle has 7/9 litre of juice. Aarav drinks 1/3 litre. How much juice is left (in litres)? =
  35. 35.A bottle has 2/3 litre of juice. Sara drinks 2/7 litre. How much juice is left (in litres)? =
  36. 36.Anaya has a ribbon 3/4 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  37. 37.Meera has a ribbon 5/6 m long and cuts off 3/8 m. How long is the ribbon now (in m)? =
  38. 38.3/5 − 1/10 =
  39. 39.3/4 − 2/7 =
  40. 40.5/6 − 4/5 =

Answer key

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

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