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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 467 · 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. 1.3/8 − 1/3 =
  2. 2.Riya has a ribbon 8/9 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  3. 3.A bottle has 6/7 litre of juice. Tara drinks 1/4 litre. How much juice is left (in litres)? =
  4. 4.A bottle has 4/5 litre of juice. Anaya drinks 1/10 litre. How much juice is left (in litres)? =
  5. 5.3/8 − 1/4 =
  6. 6.5/6 − 1/10 =
  7. 7.1/2 − 2/9 =
  8. 8.3/7 − 1/3 =
  9. 9.A bottle has 4/7 litre of juice. Anaya drinks 1/2 litre. How much juice is left (in litres)? =
  10. 10.Ishaan has a ribbon 3/8 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  11. 11.7/10 − 1/5 =
  12. 12.Meera has a ribbon 5/6 m long and cuts off 3/8 m. How long is the ribbon now (in m)? =
  13. 13.9/10 − 3/5 =
  14. 14.Diya has a ribbon 3/4 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  15. 15.8/9 − 1/6 =
  16. 16.A bottle has 5/9 litre of juice. Diya drinks 1/2 litre. How much juice is left (in litres)? =
  17. 17.A bottle has 3/4 litre of juice. Vihaan drinks 2/7 litre. How much juice is left (in litres)? =
  18. 18.Tara has a ribbon 2/3 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  19. 19.7/10 − 1/4 =
  20. 20.Rohan has a ribbon 5/6 m long and cuts off 4/5 m. How long is the ribbon now (in m)? =
  21. 21.2/9 − 1/6 =
  22. 22.A tank is 2/3 full of water. Then water filling 1/9 of the tank is used. What fraction of the tank is full now? =
  23. 23.Meera has a ribbon 5/7 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  24. 24.A bottle has 4/5 litre of juice. Diya drinks 1/6 litre. How much juice is left (in litres)? =
  25. 25.A bottle has 5/8 litre of juice. Rohan drinks 1/2 litre. How much juice is left (in litres)? =
  26. 26.5/6 − 2/5 =
  27. 27.7/8 − 1/4 =
  28. 28.5/8 − 1/2 =
  29. 29.5/6 − 1/3 =
  30. 30.A bottle has 3/4 litre of juice. Kabir drinks 1/8 litre. How much juice is left (in litres)? =
  31. 31.2/3 − 1/9 =
  32. 32.2/5 − 3/10 =
  33. 33.A tank is 3/7 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  34. 34.1/3 − 2/9 =
  35. 35.9/10 − 1/2 =
  36. 36.3/5 − 1/4 =
  37. 37.3/10 − 1/6 =
  38. 38.7/10 − 2/5 =
  39. 39.Ishaan has a ribbon 7/8 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  40. 40.1/2 − 1/4 =

Answer key

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

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