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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 786 · 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.A bottle has 5/6 litre of juice. Kabir drinks 2/9 litre. How much juice is left (in litres)? =
  2. 2.1/2 − 1/8 =
  3. 3.2/3 − 5/9 =
  4. 4.2/3 − 1/7 =
  5. 5.1/3 − 1/8 =
  6. 6.2/3 − 4/9 =
  7. 7.7/9 − 1/6 =
  8. 8.A bottle has 1/4 litre of juice. Anaya drinks 1/7 litre. How much juice is left (in litres)? =
  9. 9.2/3 − 1/6 =
  10. 10.Tara has a ribbon 2/3 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  11. 11.3/4 − 1/8 =
  12. 12.2/5 − 1/3 =
  13. 13.5/7 − 1/4 =
  14. 14.A bottle has 5/6 litre of juice. Riya drinks 2/9 litre. How much juice is left (in litres)? =
  15. 15.1/2 − 2/9 =
  16. 16.A tank is 1/6 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  17. 17.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? =
  18. 18.Vihaan has a ribbon 2/3 m long and cuts off 4/7 m. How long is the ribbon now (in m)? =
  19. 19.1/3 − 1/7 =
  20. 20.1/3 − 2/9 =
  21. 21.Diya has a ribbon 1/4 m long and cuts off 1/7 m. How long is the ribbon now (in m)? =
  22. 22.A tank is 1/3 full of water. Then water filling 2/7 of the tank is used. What fraction of the tank is full now? =
  23. 23.3/4 − 3/7 =
  24. 24.3/4 − 5/8 =
  25. 25.A bottle has 2/3 litre of juice. Anaya drinks 2/7 litre. How much juice is left (in litres)? =
  26. 26.1/3 − 3/10 =
  27. 27.Kabir has a ribbon 2/5 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  28. 28.1/4 − 1/8 =
  29. 29.A bottle has 1/3 litre of juice. Ishaan drinks 1/7 litre. How much juice is left (in litres)? =
  30. 30.2/7 − 1/4 =
  31. 31.5/7 − 2/3 =
  32. 32.A bottle has 1/3 litre of juice. Anaya drinks 1/8 litre. How much juice is left (in litres)? =
  33. 33.5/8 − 1/3 =
  34. 34.A bottle has 5/6 litre of juice. Arjun drinks 5/9 litre. How much juice is left (in litres)? =
  35. 35.3/8 − 1/4 =
  36. 36.A bottle has 9/10 litre of juice. Sara drinks 1/5 litre. How much juice is left (in litres)? =
  37. 37.A tank is 2/3 full of water. Then water filling 4/9 of the tank is used. What fraction of the tank is full now? =
  38. 38.A tank is 1/3 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  39. 39.Meera has a ribbon 4/5 m long and cuts off 7/10 m. How long is the ribbon now (in m)? =
  40. 40.4/5 − 1/3 =

Answer key

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

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