← Subtracting fractions: different denominators lesson New set →

Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 750 · 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. 1.1/3 − 1/7 =
  2. 2.9/10 − 1/2 =
  3. 3.A bottle has 4/5 litre of juice. Aarav drinks 1/2 litre. How much juice is left (in litres)? =
  4. 4.4/7 − 1/3 =
  5. 5.Ishaan has a ribbon 3/5 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  6. 6.A bottle has 5/7 litre of juice. Riya drinks 1/3 litre. How much juice is left (in litres)? =
  7. 7.1/2 − 3/7 =
  8. 8.Aarav has a ribbon 4/5 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  9. 9.A bottle has 2/3 litre of juice. Aarav drinks 5/9 litre. How much juice is left (in litres)? =
  10. 10.A bottle has 5/9 litre of juice. Kabir drinks 1/2 litre. How much juice is left (in litres)? =
  11. 11.5/6 − 2/5 =
  12. 12.5/6 − 5/8 =
  13. 13.5/7 − 1/2 =
  14. 14.A bottle has 3/4 litre of juice. Riya drinks 3/10 litre. How much juice is left (in litres)? =
  15. 15.1/2 − 4/9 =
  16. 16.4/5 − 3/10 =
  17. 17.9/10 − 1/4 =
  18. 18.A bottle has 2/3 litre of juice. Kabir drinks 1/10 litre. How much juice is left (in litres)? =
  19. 19.1/2 − 1/3 =
  20. 20.A tank is 5/6 full of water. Then water filling 2/9 of the tank is used. What fraction of the tank is full now? =
  21. 21.Aarav has a ribbon 1/6 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  22. 22.A bottle has 9/10 litre of juice. Rohan drinks 1/2 litre. How much juice is left (in litres)? =
  23. 23.A bottle has 4/7 litre of juice. Kabir drinks 1/3 litre. How much juice is left (in litres)? =
  24. 24.9/10 − 2/3 =
  25. 25.4/9 − 1/3 =
  26. 26.7/8 − 1/4 =
  27. 27.2/3 − 3/8 =
  28. 28.A tank is 3/4 full of water. Then water filling 3/8 of the tank is used. What fraction of the tank is full now? =
  29. 29.3/4 − 1/2 =
  30. 30.Anaya has a ribbon 5/8 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  31. 31.5/6 − 1/8 =
  32. 32.3/4 − 3/5 =
  33. 33.A bottle has 3/4 litre of juice. Diya drinks 3/8 litre. How much juice is left (in litres)? =
  34. 34.1/4 − 1/7 =
  35. 35.5/9 − 1/3 =
  36. 36.2/9 − 1/6 =
  37. 37.3/7 − 1/3 =
  38. 38.A bottle has 1/2 litre of juice. Ishaan drinks 1/9 litre. How much juice is left (in litres)? =
  39. 39.3/5 − 3/10 =
  40. 40.7/10 − 2/3 =

Answer key

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

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