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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 996 · 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 − 1/6 =
  2. 2.9/10 − 2/3 =
  3. 3.1/3 − 1/9 =
  4. 4.A tank is 3/8 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  5. 5.5/9 − 1/3 =
  6. 6.5/8 − 1/2 =
  7. 7.1/2 − 2/7 =
  8. 8.A bottle has 5/6 litre of juice. Diya drinks 1/9 litre. How much juice is left (in litres)? =
  9. 9.Vihaan has a ribbon 2/3 m long and cuts off 3/7 m. How long is the ribbon now (in m)? =
  10. 10.Anaya has a ribbon 6/7 m long and cuts off 3/4 m. How long is the ribbon now (in m)? =
  11. 11.Sara has a ribbon 1/4 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  12. 12.A tank is 1/4 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  13. 13.A bottle has 2/3 litre of juice. Aarav drinks 4/9 litre. How much juice is left (in litres)? =
  14. 14.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? =
  15. 15.4/5 − 3/10 =
  16. 16.5/6 − 2/5 =
  17. 17.A bottle has 3/8 litre of juice. Anaya drinks 1/6 litre. How much juice is left (in litres)? =
  18. 18.9/10 − 1/5 =
  19. 19.Arjun has a ribbon 2/7 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  20. 20.3/4 − 5/8 =
  21. 21.Diya has a ribbon 5/6 m long and cuts off 2/5 m. How long is the ribbon now (in m)? =
  22. 22.A bottle has 9/10 litre of juice. Tara drinks 4/5 litre. How much juice is left (in litres)? =
  23. 23.1/2 − 3/7 =
  24. 24.Rohan has a ribbon 1/2 m long and cuts off 4/9 m. How long is the ribbon now (in m)? =
  25. 25.3/10 − 1/4 =
  26. 26.3/8 − 1/3 =
  27. 27.A bottle has 7/8 litre of juice. Sara drinks 1/2 litre. How much juice is left (in litres)? =
  28. 28.5/8 − 1/3 =
  29. 29.Kabir has a ribbon 3/4 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  30. 30.Ishaan has a ribbon 1/2 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  31. 31.A bottle has 2/3 litre of juice. Arjun drinks 1/7 litre. How much juice is left (in litres)? =
  32. 32.1/5 − 1/10 =
  33. 33.A bottle has 1/3 litre of juice. Vihaan drinks 2/7 litre. How much juice is left (in litres)? =
  34. 34.Diya has a ribbon 5/8 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  35. 35.1/4 − 1/6 =
  36. 36.4/5 − 7/10 =
  37. 37.1/4 − 1/8 =
  38. 38.7/9 − 1/3 =
  39. 39.Arjun has a ribbon 9/10 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  40. 40.A tank is 4/9 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =

Answer key

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

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