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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 993 · 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. 1.7/9 − 1/2 =
  2. 2.2/3 − 3/8 =
  3. 3.A bottle has 3/4 litre of juice. Tara drinks 4/7 litre. How much juice is left (in litres)? =
  4. 4.8/9 − 1/2 =
  5. 5.Tara has a ribbon 1/5 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  6. 6.7/10 − 1/3 =
  7. 7.7/9 − 1/3 =
  8. 8.Tara has a ribbon 4/7 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  9. 9.1/3 − 1/8 =
  10. 10.A bottle has 8/9 litre of juice. Kabir drinks 2/3 litre. How much juice is left (in litres)? =
  11. 11.Aarav has a ribbon 5/6 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  12. 12.1/2 − 1/9 =
  13. 13.A tank is 7/8 full of water. Then water filling 5/6 of the tank is used. What fraction of the tank is full now? =
  14. 14.5/7 − 1/2 =
  15. 15.Ishaan has a ribbon 3/4 m long and cuts off 4/7 m. How long is the ribbon now (in m)? =
  16. 16.A bottle has 1/4 litre of juice. Aarav drinks 1/10 litre. How much juice is left (in litres)? =
  17. 17.A tank is 9/10 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  18. 18.1/3 − 2/9 =
  19. 19.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? =
  20. 20.A bottle has 3/7 litre of juice. Aarav drinks 1/4 litre. How much juice is left (in litres)? =
  21. 21.A bottle has 5/8 litre of juice. Riya drinks 1/2 litre. How much juice is left (in litres)? =
  22. 22.A bottle has 5/6 litre of juice. Sara drinks 7/9 litre. How much juice is left (in litres)? =
  23. 23.Rohan has a ribbon 2/3 m long and cuts off 2/9 m. How long is the ribbon now (in m)? =
  24. 24.A tank is 7/10 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  25. 25.A bottle has 2/3 litre of juice. Aarav drinks 1/6 litre. How much juice is left (in litres)? =
  26. 26.9/10 − 1/3 =
  27. 27.A bottle has 5/6 litre of juice. Tara drinks 1/5 litre. How much juice is left (in litres)? =
  28. 28.5/6 − 2/9 =
  29. 29.5/8 − 1/4 =
  30. 30.Diya has a ribbon 3/4 m long and cuts off 5/8 m. How long is the ribbon now (in m)? =
  31. 31.A tank is 1/3 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  32. 32.A bottle has 6/7 litre of juice. Arjun drinks 3/4 litre. How much juice is left (in litres)? =
  33. 33.3/4 − 3/7 =
  34. 34.4/5 − 2/3 =
  35. 35.7/10 − 1/4 =
  36. 36.5/9 − 1/6 =
  37. 37.3/10 − 1/6 =
  38. 38.3/7 − 1/3 =
  39. 39.Arjun has a ribbon 1/3 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  40. 40.7/10 − 2/3 =

Answer key

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

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