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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 494 · 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.A bottle has 5/6 litre of juice. Riya drinks 1/8 litre. How much juice is left (in litres)? =
  2. 2.2/3 − 1/8 =
  3. 3.3/5 − 1/2 =
  4. 4.A bottle has 1/3 litre of juice. Anaya drinks 1/7 litre. How much juice is left (in litres)? =
  5. 5.A bottle has 1/2 litre of juice. Meera drinks 1/6 litre. How much juice is left (in litres)? =
  6. 6.A bottle has 9/10 litre of juice. Vihaan drinks 2/3 litre. How much juice is left (in litres)? =
  7. 7.3/5 − 1/6 =
  8. 8.7/10 − 2/5 =
  9. 9.Anaya has a ribbon 1/6 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  10. 10.3/4 − 7/10 =
  11. 11.A bottle has 2/3 litre of juice. Meera drinks 3/7 litre. How much juice is left (in litres)? =
  12. 12.5/6 − 1/10 =
  13. 13.Anaya has a ribbon 2/5 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  14. 14.2/3 − 2/9 =
  15. 15.5/9 − 1/3 =
  16. 16.Sara has a ribbon 2/3 m long and cuts off 5/9 m. How long is the ribbon now (in m)? =
  17. 17.5/6 − 1/9 =
  18. 18.A bottle has 5/6 litre of juice. Sara drinks 3/10 litre. How much juice is left (in litres)? =
  19. 19.1/4 − 1/8 =
  20. 20.3/5 − 1/4 =
  21. 21.Meera has a ribbon 1/3 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  22. 22.9/10 − 3/5 =
  23. 23.A bottle has 3/5 litre of juice. Kabir drinks 1/4 litre. How much juice is left (in litres)? =
  24. 24.Aarav has a ribbon 4/5 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  25. 25.1/3 − 1/9 =
  26. 26.7/10 − 1/2 =
  27. 27.3/4 − 2/5 =
  28. 28.3/8 − 1/3 =
  29. 29.A tank is 1/4 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  30. 30.A tank is 5/7 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  31. 31.3/4 − 5/7 =
  32. 32.5/6 − 3/8 =
  33. 33.Tara has a ribbon 2/3 m long and cuts off 3/8 m. How long is the ribbon now (in m)? =
  34. 34.3/10 − 1/5 =
  35. 35.2/3 − 4/9 =
  36. 36.A tank is 3/4 full of water. Then water filling 4/7 of the tank is used. What fraction of the tank is full now? =
  37. 37.Diya has a ribbon 4/7 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  38. 38.A tank is 1/2 full of water. Then water filling 1/7 of the tank is used. What fraction of the tank is full now? =
  39. 39.7/9 − 1/3 =
  40. 40.7/8 − 1/4 =

Answer key

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

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