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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 720 · 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. 1.5/8 − 1/3 =
  2. 2.1/3 − 1/4 =
  3. 3.Arjun has a ribbon 5/6 m long and cuts off 7/9 m. How long is the ribbon now (in m)? =
  4. 4.9/10 − 2/3 =
  5. 5.7/10 − 3/5 =
  6. 6.A bottle has 3/8 litre of juice. Diya drinks 1/4 litre. How much juice is left (in litres)? =
  7. 7.A tank is 3/5 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  8. 8.A bottle has 1/2 litre of juice. Tara drinks 1/10 litre. How much juice is left (in litres)? =
  9. 9.5/8 − 1/4 =
  10. 10.5/8 − 1/2 =
  11. 11.7/9 − 1/2 =
  12. 12.Meera has a ribbon 7/8 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  13. 13.A bottle has 4/5 litre of juice. Aarav drinks 1/3 litre. How much juice is left (in litres)? =
  14. 14.1/4 − 1/5 =
  15. 15.Sara has a ribbon 1/4 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  16. 16.4/7 − 1/3 =
  17. 17.Kabir has a ribbon 4/5 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  18. 18.A bottle has 3/5 litre of juice. Diya drinks 1/10 litre. How much juice is left (in litres)? =
  19. 19.A tank is 5/6 full of water. Then water filling 2/5 of the tank is used. What fraction of the tank is full now? =
  20. 20.A tank is 2/5 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  21. 21.A tank is 4/7 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  22. 22.A bottle has 6/7 litre of juice. Ishaan drinks 2/3 litre. How much juice is left (in litres)? =
  23. 23.1/2 − 1/5 =
  24. 24.3/4 − 3/8 =
  25. 25.4/5 − 2/3 =
  26. 26.4/7 − 1/4 =
  27. 27.5/7 − 1/2 =
  28. 28.A bottle has 1/4 litre of juice. Sara drinks 1/10 litre. How much juice is left (in litres)? =
  29. 29.3/4 − 3/5 =
  30. 30.A bottle has 4/7 litre of juice. Kabir drinks 1/4 litre. How much juice is left (in litres)? =
  31. 31.A bottle has 1/5 litre of juice. Kabir drinks 1/10 litre. How much juice is left (in litres)? =
  32. 32.3/8 − 1/3 =
  33. 33.3/4 − 3/7 =
  34. 34.4/5 − 1/10 =
  35. 35.1/2 − 2/7 =
  36. 36.A bottle has 1/2 litre of juice. Vihaan drinks 2/9 litre. How much juice is left (in litres)? =
  37. 37.Kabir has a ribbon 2/3 m long and cuts off 2/9 m. How long is the ribbon now (in m)? =
  38. 38.2/5 − 1/4 =
  39. 39.A bottle has 4/9 litre of juice. Riya drinks 1/6 litre. How much juice is left (in litres)? =
  40. 40.5/6 − 1/5 =

Answer key

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

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