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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 348 · 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. 1.2/3 − 2/5 =
  2. 2.1/3 − 1/9 =
  3. 3.Vihaan has a ribbon 5/6 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  4. 4.A tank is 8/9 full of water. Then water filling 5/6 of the tank is used. What fraction of the tank is full now? =
  5. 5.A bottle has 1/3 litre of juice. Tara drinks 2/9 litre. How much juice is left (in litres)? =
  6. 6.1/2 − 3/10 =
  7. 7.5/7 − 1/2 =
  8. 8.Diya has a ribbon 9/10 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  9. 9.2/3 − 4/7 =
  10. 10.7/8 − 1/2 =
  11. 11.A tank is 5/6 full of water. Then water filling 4/5 of the tank is used. What fraction of the tank is full now? =
  12. 12.A bottle has 3/4 litre of juice. Meera drinks 7/10 litre. How much juice is left (in litres)? =
  13. 13.Meera has a ribbon 9/10 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  14. 14.A bottle has 3/5 litre of juice. Kabir drinks 3/10 litre. How much juice is left (in litres)? =
  15. 15.3/4 − 1/5 =
  16. 16.3/5 − 1/10 =
  17. 17.Diya has a ribbon 5/6 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  18. 18.Aarav has a ribbon 5/6 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  19. 19.A bottle has 5/7 litre of juice. Rohan drinks 2/3 litre. How much juice is left (in litres)? =
  20. 20.A bottle has 2/3 litre of juice. Tara drinks 3/5 litre. How much juice is left (in litres)? =
  21. 21.1/3 − 3/10 =
  22. 22.5/6 − 2/3 =
  23. 23.A bottle has 7/9 litre of juice. Meera drinks 1/2 litre. How much juice is left (in litres)? =
  24. 24.Rohan has a ribbon 7/9 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  25. 25.A bottle has 1/2 litre of juice. Meera drinks 2/5 litre. How much juice is left (in litres)? =
  26. 26.7/9 − 1/6 =
  27. 27.A tank is 2/3 full of water. Then water filling 1/7 of the tank is used. What fraction of the tank is full now? =
  28. 28.2/5 − 1/10 =
  29. 29.Vihaan has a ribbon 5/6 m long and cuts off 5/8 m. How long is the ribbon now (in m)? =
  30. 30.7/10 − 1/4 =
  31. 31.5/6 − 1/4 =
  32. 32.A tank is 3/4 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  33. 33.1/2 − 1/8 =
  34. 34.2/5 − 1/3 =
  35. 35.A bottle has 4/5 litre of juice. Kabir drinks 1/3 litre. How much juice is left (in litres)? =
  36. 36.Kabir has a ribbon 2/3 m long and cuts off 3/7 m. How long is the ribbon now (in m)? =
  37. 37.Aarav has a ribbon 5/6 m long and cuts off 3/4 m. How long is the ribbon now (in m)? =
  38. 38.A bottle has 1/2 litre of juice. Anaya drinks 3/10 litre. How much juice is left (in litres)? =
  39. 39.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? =
  40. 40.A bottle has 3/5 litre of juice. Sara drinks 1/4 litre. How much juice is left (in litres)? =

Answer key

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

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