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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 320 · 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.Meera has a ribbon 1/3 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  2. 2.Tara has a ribbon 5/7 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  3. 3.3/8 − 1/4 =
  4. 4.A tank is 1/4 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  5. 5.7/9 − 1/3 =
  6. 6.A bottle has 4/5 litre of juice. Tara drinks 7/10 litre. How much juice is left (in litres)? =
  7. 7.A bottle has 7/10 litre of juice. Kabir drinks 1/6 litre. How much juice is left (in litres)? =
  8. 8.A bottle has 5/6 litre of juice. Meera drinks 4/5 litre. How much juice is left (in litres)? =
  9. 9.Vihaan has a ribbon 9/10 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  10. 10.5/6 − 1/9 =
  11. 11.5/6 − 1/8 =
  12. 12.A bottle has 5/8 litre of juice. Diya drinks 1/6 litre. How much juice is left (in litres)? =
  13. 13.1/3 − 2/9 =
  14. 14.9/10 − 4/5 =
  15. 15.4/5 − 3/10 =
  16. 16.8/9 − 1/6 =
  17. 17.A tank is 1/2 full of water. Then water filling 3/7 of the tank is used. What fraction of the tank is full now? =
  18. 18.A bottle has 9/10 litre of juice. Anaya drinks 3/4 litre. How much juice is left (in litres)? =
  19. 19.Tara has a ribbon 4/5 m long and cuts off 7/10 m. How long is the ribbon now (in m)? =
  20. 20.Vihaan has a ribbon 1/2 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  21. 21.2/3 − 3/7 =
  22. 22.A bottle has 3/4 litre of juice. Rohan drinks 2/7 litre. How much juice is left (in litres)? =
  23. 23.3/4 − 4/7 =
  24. 24.A bottle has 1/4 litre of juice. Riya drinks 1/8 litre. How much juice is left (in litres)? =
  25. 25.1/6 − 1/9 =
  26. 26.6/7 − 1/2 =
  27. 27.3/4 − 5/7 =
  28. 28.5/7 − 1/4 =
  29. 29.2/3 − 2/7 =
  30. 30.5/9 − 1/6 =
  31. 31.7/10 − 1/3 =
  32. 32.Ishaan has a ribbon 3/10 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  33. 33.A tank is 9/10 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  34. 34.A bottle has 3/4 litre of juice. Diya drinks 3/10 litre. How much juice is left (in litres)? =
  35. 35.3/4 − 2/3 =
  36. 36.Arjun has a ribbon 7/8 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  37. 37.1/2 − 1/9 =
  38. 38.3/5 − 3/10 =
  39. 39.A tank is 5/6 full of water. Then water filling 5/9 of the tank is used. What fraction of the tank is full now? =
  40. 40.A bottle has 1/3 litre of juice. Vihaan drinks 1/8 litre. How much juice is left (in litres)? =

Answer key

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

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