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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 770 · 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.Anaya has a ribbon 1/3 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  2. 2.1/2 − 1/5 =
  3. 3.5/6 − 1/9 =
  4. 4.A bottle has 2/3 litre of juice. Diya drinks 3/8 litre. How much juice is left (in litres)? =
  5. 5.2/5 − 1/3 =
  6. 6.Anaya has a ribbon 4/5 m long and cuts off 7/10 m. How long is the ribbon now (in m)? =
  7. 7.1/3 − 1/8 =
  8. 8.A tank is 4/5 full of water. Then water filling 3/4 of the tank is used. What fraction of the tank is full now? =
  9. 9.9/10 − 1/2 =
  10. 10.8/9 − 2/3 =
  11. 11.1/2 − 3/7 =
  12. 12.5/9 − 1/3 =
  13. 13.A tank is 5/9 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  14. 14.3/4 − 3/7 =
  15. 15.A bottle has 2/3 litre of juice. Kabir drinks 1/9 litre. How much juice is left (in litres)? =
  16. 16.2/3 − 1/9 =
  17. 17.A tank is 3/10 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 − 2/7 =
  19. 19.1/2 − 4/9 =
  20. 20.7/10 − 3/5 =
  21. 21.5/6 − 4/9 =
  22. 22.Kabir has a ribbon 1/4 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  23. 23.Aarav has a ribbon 1/3 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  24. 24.A bottle has 3/8 litre of juice. Riya drinks 1/3 litre. How much juice is left (in litres)? =
  25. 25.2/7 − 1/4 =
  26. 26.5/7 − 1/2 =
  27. 27.A tank is 2/3 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  28. 28.7/9 − 1/3 =
  29. 29.A bottle has 8/9 litre of juice. Arjun drinks 5/6 litre. How much juice is left (in litres)? =
  30. 30.Tara has a ribbon 1/4 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  31. 31.2/3 − 4/7 =
  32. 32.A bottle has 2/3 litre of juice. Riya drinks 3/5 litre. How much juice is left (in litres)? =
  33. 33.Diya has a ribbon 2/3 m long and cuts off 5/9 m. How long is the ribbon now (in m)? =
  34. 34.A bottle has 7/8 litre of juice. Riya drinks 5/6 litre. How much juice is left (in litres)? =
  35. 35.1/2 − 1/7 =
  36. 36.A bottle has 3/4 litre of juice. Rohan drinks 1/3 litre. How much juice is left (in litres)? =
  37. 37.4/5 − 1/10 =
  38. 38.1/3 − 1/9 =
  39. 39.2/3 − 2/7 =
  40. 40.Kabir has a ribbon 7/8 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =

Answer key

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

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