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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 850 · 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 − 2/5 =
  2. 2.7/9 − 1/6 =
  3. 3.A bottle has 5/6 litre of juice. Riya drinks 1/8 litre. How much juice is left (in litres)? =
  4. 4.5/6 − 1/9 =
  5. 5.5/6 − 5/9 =
  6. 6.1/3 − 1/9 =
  7. 7.A bottle has 2/3 litre of juice. Riya drinks 2/9 litre. How much juice is left (in litres)? =
  8. 8.A bottle has 1/5 litre of juice. Kabir drinks 1/10 litre. How much juice is left (in litres)? =
  9. 9.A bottle has 5/9 litre of juice. Arjun drinks 1/3 litre. How much juice is left (in litres)? =
  10. 10.3/4 − 5/7 =
  11. 11.3/7 − 1/4 =
  12. 12.A bottle has 3/4 litre of juice. Meera drinks 2/7 litre. How much juice is left (in litres)? =
  13. 13.A bottle has 1/2 litre of juice. Vihaan drinks 2/5 litre. How much juice is left (in litres)? =
  14. 14.2/5 − 1/3 =
  15. 15.Vihaan has a ribbon 2/3 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  16. 16.9/10 − 3/5 =
  17. 17.A tank is 2/3 full of water. Then water filling 3/8 of the tank is used. What fraction of the tank is full now? =
  18. 18.Diya has a ribbon 2/3 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  19. 19.Tara has a ribbon 3/4 m long and cuts off 3/7 m. How long is the ribbon now (in m)? =
  20. 20.7/10 − 1/4 =
  21. 21.2/3 − 1/10 =
  22. 22.7/10 − 2/5 =
  23. 23.2/3 − 4/9 =
  24. 24.3/4 − 2/7 =
  25. 25.A tank is 3/5 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  26. 26.A tank is 3/4 full of water. Then water filling 3/8 of the tank is used. What fraction of the tank is full now? =
  27. 27.Meera has a ribbon 3/7 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  28. 28.7/9 − 2/3 =
  29. 29.A bottle has 3/10 litre of juice. Aarav drinks 1/5 litre. How much juice is left (in litres)? =
  30. 30.A bottle has 4/9 litre of juice. Riya drinks 1/6 litre. How much juice is left (in litres)? =
  31. 31.8/9 − 1/2 =
  32. 32.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? =
  33. 33.Anaya has a ribbon 4/7 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  34. 34.5/6 − 4/9 =
  35. 35.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? =
  36. 36.A tank is 5/9 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  37. 37.8/9 − 5/6 =
  38. 38.3/4 − 3/5 =
  39. 39.7/8 − 1/6 =
  40. 40.Aarav has a ribbon 2/5 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =

Answer key

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

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