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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 552 · 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. 1.3/4 − 1/8 =
  2. 2.A bottle has 4/5 litre of juice. Arjun drinks 1/6 litre. How much juice is left (in litres)? =
  3. 3.A tank is 4/5 full of water. Then water filling 7/10 of the tank is used. What fraction of the tank is full now? =
  4. 4.1/2 − 1/6 =
  5. 5.Ishaan has a ribbon 2/5 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  6. 6.A bottle has 4/7 litre of juice. Kabir drinks 1/4 litre. How much juice is left (in litres)? =
  7. 7.A tank is 5/8 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  8. 8.A tank is 2/5 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  9. 9.Meera has a ribbon 4/7 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  10. 10.2/3 − 5/9 =
  11. 11.1/5 − 1/10 =
  12. 12.A tank is 2/3 full of water. Then water filling 4/7 of the tank is used. What fraction of the tank is full now? =
  13. 13.4/9 − 1/6 =
  14. 14.6/7 − 1/3 =
  15. 15.7/10 − 1/3 =
  16. 16.3/7 − 1/3 =
  17. 17.2/3 − 3/5 =
  18. 18.A tank is 5/6 full of water. Then water filling 1/9 of the tank is used. What fraction of the tank is full now? =
  19. 19.5/6 − 3/8 =
  20. 20.Rohan has a ribbon 4/5 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  21. 21.A bottle has 4/5 litre of juice. Aarav drinks 1/4 litre. How much juice is left (in litres)? =
  22. 22.1/3 − 1/8 =
  23. 23.5/6 − 1/2 =
  24. 24.Ishaan has a ribbon 9/10 m long and cuts off 4/5 m. How long is the ribbon now (in m)? =
  25. 25.A tank is 2/3 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  26. 26.3/4 − 3/7 =
  27. 27.A bottle has 7/9 litre of juice. Rohan drinks 1/2 litre. How much juice is left (in litres)? =
  28. 28.1/3 − 2/7 =
  29. 29.A bottle has 9/10 litre of juice. Meera drinks 4/5 litre. How much juice is left (in litres)? =
  30. 30.2/7 − 1/4 =
  31. 31.5/6 − 5/8 =
  32. 32.A bottle has 2/3 litre of juice. Meera drinks 3/10 litre. How much juice is left (in litres)? =
  33. 33.1/3 − 1/7 =
  34. 34.5/7 − 1/4 =
  35. 35.Riya has a ribbon 5/6 m long and cuts off 7/9 m. How long is the ribbon now (in m)? =
  36. 36.4/7 − 1/2 =
  37. 37.Arjun has a ribbon 7/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  38. 38.3/4 − 2/5 =
  39. 39.9/10 − 1/2 =
  40. 40.Sara has a ribbon 1/3 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =

Answer key

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

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