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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 211 · 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.Meera has a ribbon 3/4 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  2. 2.A bottle has 7/10 litre of juice. Sara drinks 2/5 litre. How much juice is left (in litres)? =
  3. 3.5/6 − 5/8 =
  4. 4.1/3 − 2/9 =
  5. 5.Tara has a ribbon 8/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  6. 6.5/7 − 2/3 =
  7. 7.Diya has a ribbon 6/7 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  8. 8.3/4 − 7/10 =
  9. 9.A bottle has 5/8 litre of juice. Aarav drinks 1/4 litre. How much juice is left (in litres)? =
  10. 10.A bottle has 2/3 litre of juice. Arjun drinks 3/8 litre. How much juice is left (in litres)? =
  11. 11.1/3 − 1/4 =
  12. 12.A bottle has 4/7 litre of juice. Kabir drinks 1/4 litre. How much juice is left (in litres)? =
  13. 13.A tank is 5/8 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  14. 14.Vihaan has a ribbon 7/8 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  15. 15.5/9 − 1/3 =
  16. 16.A bottle has 1/3 litre of juice. Rohan drinks 1/8 litre. How much juice is left (in litres)? =
  17. 17.A tank is 3/4 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  18. 18.Arjun has a ribbon 7/8 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  19. 19.1/2 − 2/5 =
  20. 20.1/2 − 3/7 =
  21. 21.A tank is 2/3 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  22. 22.2/3 − 2/9 =
  23. 23.4/9 − 1/3 =
  24. 24.1/3 − 1/7 =
  25. 25.3/5 − 3/10 =
  26. 26.2/3 − 2/5 =
  27. 27.A bottle has 4/5 litre of juice. Kabir drinks 3/4 litre. How much juice is left (in litres)? =
  28. 28.A bottle has 1/6 litre of juice. Diya drinks 1/8 litre. How much juice is left (in litres)? =
  29. 29.A bottle has 4/5 litre of juice. Riya drinks 1/6 litre. How much juice is left (in litres)? =
  30. 30.3/7 − 1/3 =
  31. 31.A tank is 3/4 full of water. Then water filling 5/8 of the tank is used. What fraction of the tank is full now? =
  32. 32.A tank is 3/4 full of water. Then water filling 3/5 of the tank is used. What fraction of the tank is full now? =
  33. 33.A tank is 4/7 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  34. 34.Rohan has a ribbon 1/2 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  35. 35.A bottle has 1/5 litre of juice. Kabir drinks 1/10 litre. How much juice is left (in litres)? =
  36. 36.3/4 − 2/5 =
  37. 37.5/8 − 1/3 =
  38. 38.A bottle has 2/3 litre of juice. Kabir drinks 2/9 litre. How much juice is left (in litres)? =
  39. 39.A bottle has 1/2 litre of juice. Kabir drinks 2/7 litre. How much juice is left (in litres)? =
  40. 40.A bottle has 3/7 litre of juice. Kabir drinks 1/3 litre. How much juice is left (in litres)? =

Answer key

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

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