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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 846 · 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 1/3 litre of juice. Rohan drinks 1/10 litre. How much juice is left (in litres)? =
  2. 2.Aarav has a ribbon 1/3 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  3. 3.2/3 − 4/7 =
  4. 4.Rohan has a ribbon 1/4 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  5. 5.A tank is 2/3 full of water. Then water filling 5/9 of the tank is used. What fraction of the tank is full now? =
  6. 6.Riya has a ribbon 1/2 m long and cuts off 3/8 m. How long is the ribbon now (in m)? =
  7. 7.Tara has a ribbon 7/10 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  8. 8.A bottle has 3/10 litre of juice. Ishaan drinks 1/4 litre. How much juice is left (in litres)? =
  9. 9.1/3 − 2/9 =
  10. 10.4/5 − 7/10 =
  11. 11.A bottle has 3/8 litre of juice. Anaya drinks 1/3 litre. How much juice is left (in litres)? =
  12. 12.2/3 − 2/9 =
  13. 13.2/3 − 1/6 =
  14. 14.Sara has a ribbon 1/6 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  15. 15.3/4 − 1/7 =
  16. 16.7/9 − 2/3 =
  17. 17.2/5 − 1/10 =
  18. 18.A bottle has 1/2 litre of juice. Vihaan drinks 2/7 litre. How much juice is left (in litres)? =
  19. 19.2/3 − 5/9 =
  20. 20.A tank is 3/10 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  21. 21.A bottle has 1/2 litre of juice. Ishaan drinks 3/10 litre. How much juice is left (in litres)? =
  22. 22.5/6 − 3/5 =
  23. 23.Rohan has a ribbon 7/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  24. 24.Kabir has a ribbon 7/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  25. 25.Sara has a ribbon 7/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  26. 26.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? =
  27. 27.9/10 − 1/3 =
  28. 28.A tank is 5/8 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  29. 29.A tank is 3/4 full of water. Then water filling 2/7 of the tank is used. What fraction of the tank is full now? =
  30. 30.A bottle has 5/6 litre of juice. Kabir drinks 3/4 litre. How much juice is left (in litres)? =
  31. 31.5/9 − 1/6 =
  32. 32.1/4 − 1/8 =
  33. 33.2/3 − 3/7 =
  34. 34.Meera has a ribbon 3/4 m long and cuts off 4/7 m. How long is the ribbon now (in m)? =
  35. 35.Kabir has a ribbon 5/6 m long and cuts off 5/9 m. How long is the ribbon now (in m)? =
  36. 36.3/10 − 1/5 =
  37. 37.A tank is 5/7 full of water. Then water filling 2/3 of the tank is used. What fraction of the tank is full now? =
  38. 38.2/3 − 1/10 =
  39. 39.4/5 − 1/6 =
  40. 40.A bottle has 3/4 litre of juice. Ishaan drinks 2/3 litre. How much juice is left (in litres)? =

Answer key

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

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