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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 664 · 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 − 5/8 =
  2. 2.5/6 − 2/3 =
  3. 3.2/3 − 1/5 =
  4. 4.A tank is 3/4 full of water. Then water filling 1/7 of the tank is used. What fraction of the tank is full now? =
  5. 5.7/8 − 2/3 =
  6. 6.Aarav has a ribbon 1/5 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  7. 7.Meera has a ribbon 1/2 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  8. 8.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? =
  9. 9.5/6 − 7/9 =
  10. 10.Meera has a ribbon 3/4 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  11. 11.3/5 − 1/10 =
  12. 12.3/5 − 1/4 =
  13. 13.2/5 − 1/4 =
  14. 14.4/9 − 1/6 =
  15. 15.5/7 − 1/3 =
  16. 16.Tara has a ribbon 8/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  17. 17.2/3 − 2/5 =
  18. 18.A bottle has 1/3 litre of juice. Anaya drinks 1/9 litre. How much juice is left (in litres)? =
  19. 19.A bottle has 8/9 litre of juice. Aarav drinks 1/2 litre. How much juice is left (in litres)? =
  20. 20.5/9 − 1/2 =
  21. 21.5/6 − 2/9 =
  22. 22.A tank is 4/5 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  23. 23.6/7 − 3/4 =
  24. 24.2/3 − 1/7 =
  25. 25.A bottle has 2/3 litre of juice. Tara drinks 5/9 litre. How much juice is left (in litres)? =
  26. 26.A bottle has 3/5 litre of juice. Aarav drinks 1/4 litre. How much juice is left (in litres)? =
  27. 27.1/2 − 1/3 =
  28. 28.1/3 − 1/6 =
  29. 29.3/7 − 1/4 =
  30. 30.A bottle has 3/5 litre of juice. Anaya drinks 1/10 litre. How much juice is left (in litres)? =
  31. 31.Kabir has a ribbon 7/8 m long and cuts off 5/6 m. How long is the ribbon now (in m)? =
  32. 32.5/7 − 1/4 =
  33. 33.5/6 − 1/8 =
  34. 34.Rohan has a ribbon 3/8 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  35. 35.A bottle has 4/7 litre of juice. Meera drinks 1/2 litre. How much juice is left (in litres)? =
  36. 36.Kabir has a ribbon 4/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  37. 37.1/2 − 2/9 =
  38. 38.A bottle has 9/10 litre of juice. Riya drinks 1/4 litre. How much juice is left (in litres)? =
  39. 39.2/3 − 4/7 =
  40. 40.7/9 − 1/2 =

Answer key

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

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