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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 854 · 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. 1.9/10 − 5/6 =
  2. 2.2/3 − 1/9 =
  3. 3.A bottle has 1/5 litre of juice. Sara drinks 1/6 litre. How much juice is left (in litres)? =
  4. 4.7/8 − 1/4 =
  5. 5.3/4 − 1/8 =
  6. 6.3/4 − 2/5 =
  7. 7.Aarav has a ribbon 6/7 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  8. 8.5/6 − 3/10 =
  9. 9.3/4 − 1/7 =
  10. 10.1/2 − 2/9 =
  11. 11.A tank is 2/5 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  12. 12.6/7 − 3/4 =
  13. 13.Aarav has a ribbon 1/6 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  14. 14.Diya has a ribbon 1/4 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  15. 15.3/4 − 3/10 =
  16. 16.A bottle has 2/3 litre of juice. Anaya drinks 1/6 litre. How much juice is left (in litres)? =
  17. 17.A bottle has 3/4 litre of juice. Meera drinks 2/3 litre. How much juice is left (in litres)? =
  18. 18.6/7 − 1/3 =
  19. 19.A tank is 6/7 full of water. Then water filling 3/4 of the tank is used. What fraction of the tank is full now? =
  20. 20.A bottle has 2/3 litre of juice. Anaya drinks 1/7 litre. How much juice is left (in litres)? =
  21. 21.1/2 − 3/8 =
  22. 22.A bottle has 4/5 litre of juice. Meera drinks 1/4 litre. How much juice is left (in litres)? =
  23. 23.A bottle has 1/2 litre of juice. Vihaan drinks 1/9 litre. How much juice is left (in litres)? =
  24. 24.2/5 − 1/3 =
  25. 25.7/10 − 3/5 =
  26. 26.A bottle has 1/2 litre of juice. Tara drinks 3/8 litre. How much juice is left (in litres)? =
  27. 27.Tara has a ribbon 3/5 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  28. 28.3/4 − 1/3 =
  29. 29.Kabir has a ribbon 7/9 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  30. 30.1/3 − 3/10 =
  31. 31.2/9 − 1/6 =
  32. 32.5/6 − 2/9 =
  33. 33.5/6 − 4/9 =
  34. 34.A tank is 7/10 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  35. 35.Riya has a ribbon 4/7 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  36. 36.2/3 − 2/7 =
  37. 37.2/3 − 3/7 =
  38. 38.A bottle has 5/7 litre of juice. Vihaan drinks 1/3 litre. How much juice is left (in litres)? =
  39. 39.1/2 − 2/5 =
  40. 40.A tank is 5/6 full of water. Then water filling 5/8 of the tank is used. What fraction of the tank is full now? =

Answer key

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

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