← Subtracting fractions: different denominators lesson New set →

Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 18 · 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. 1.7/10 − 2/5 =
  2. 2.Sara has a ribbon 1/3 m long and cuts off 2/9 m. How long is the ribbon now (in m)? =
  3. 3.A tank is 5/7 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  4. 4.A tank is 2/7 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  5. 5.Aarav has a ribbon 3/5 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  6. 6.Arjun has a ribbon 1/4 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  7. 7.A bottle has 2/5 litre of juice. Kabir drinks 3/10 litre. How much juice is left (in litres)? =
  8. 8.1/2 − 1/4 =
  9. 9.A bottle has 3/4 litre of juice. Ishaan drinks 1/7 litre. How much juice is left (in litres)? =
  10. 10.Riya has a ribbon 7/8 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  11. 11.2/3 − 5/9 =
  12. 12.6/7 − 2/3 =
  13. 13.1/4 − 1/10 =
  14. 14.Ishaan has a ribbon 2/5 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  15. 15.7/8 − 1/4 =
  16. 16.Sara has a ribbon 7/8 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  17. 17.3/5 − 1/4 =
  18. 18.A bottle has 7/10 litre of juice. Rohan drinks 1/6 litre. How much juice is left (in litres)? =
  19. 19.2/3 − 1/10 =
  20. 20.Ishaan has a ribbon 4/5 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  21. 21.A bottle has 3/4 litre of juice. Ishaan drinks 2/3 litre. How much juice is left (in litres)? =
  22. 22.1/2 − 2/9 =
  23. 23.A bottle has 1/3 litre of juice. Meera drinks 1/7 litre. How much juice is left (in litres)? =
  24. 24.A bottle has 2/7 litre of juice. Meera drinks 1/4 litre. How much juice is left (in litres)? =
  25. 25.4/9 − 1/3 =
  26. 26.5/8 − 1/4 =
  27. 27.A bottle has 6/7 litre of juice. Tara drinks 1/2 litre. How much juice is left (in litres)? =
  28. 28.A bottle has 5/9 litre of juice. Riya drinks 1/3 litre. How much juice is left (in litres)? =
  29. 29.7/10 − 3/5 =
  30. 30.4/5 − 1/6 =
  31. 31.3/10 − 1/4 =
  32. 32.8/9 − 1/2 =
  33. 33.1/3 − 1/4 =
  34. 34.Aarav has a ribbon 1/2 m long and cuts off 3/8 m. How long is the ribbon now (in m)? =
  35. 35.1/5 − 1/6 =
  36. 36.9/10 − 1/2 =
  37. 37.Meera has a ribbon 4/5 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  38. 38.A bottle has 5/6 litre of juice. Tara drinks 4/9 litre. How much juice is left (in litres)? =
  39. 39.Riya has a ribbon 3/4 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  40. 40.9/10 − 2/3 =

Answer key

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

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