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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 249 · 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.Ishaan has a ribbon 9/10 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  2. 2.Diya has a ribbon 2/3 m long and cuts off 4/9 m. How long is the ribbon now (in m)? =
  3. 3.Riya has a ribbon 5/7 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  4. 4.3/4 − 3/8 =
  5. 5.A tank is 6/7 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  6. 6.3/4 − 4/7 =
  7. 7.7/8 − 1/3 =
  8. 8.5/6 − 1/9 =
  9. 9.4/5 − 1/6 =
  10. 10.5/6 − 4/9 =
  11. 11.5/6 − 7/9 =
  12. 12.A tank is 4/5 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  13. 13.Meera has a ribbon 4/5 m long and cuts off 7/10 m. How long is the ribbon now (in m)? =
  14. 14.A bottle has 7/8 litre of juice. Arjun drinks 5/6 litre. How much juice is left (in litres)? =
  15. 15.A tank is 3/4 full of water. Then water filling 5/7 of the tank is used. What fraction of the tank is full now? =
  16. 16.4/7 − 1/4 =
  17. 17.9/10 − 1/2 =
  18. 18.1/2 − 1/6 =
  19. 19.A tank is 5/6 full of water. Then water filling 2/5 of the tank is used. What fraction of the tank is full now? =
  20. 20.Diya has a ribbon 1/2 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  21. 21.6/7 − 3/4 =
  22. 22.5/6 − 3/10 =
  23. 23.7/10 − 1/6 =
  24. 24.Riya has a ribbon 3/4 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  25. 25.A bottle has 5/6 litre of juice. Vihaan drinks 2/9 litre. How much juice is left (in litres)? =
  26. 26.A bottle has 2/3 litre of juice. Diya drinks 3/7 litre. How much juice is left (in litres)? =
  27. 27.1/2 − 2/9 =
  28. 28.A bottle has 7/9 litre of juice. Arjun drinks 1/2 litre. How much juice is left (in litres)? =
  29. 29.Aarav has a ribbon 3/5 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  30. 30.1/2 − 4/9 =
  31. 31.7/8 − 1/6 =
  32. 32.7/10 − 1/2 =
  33. 33.Riya has a ribbon 5/6 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  34. 34.Sara has a ribbon 1/2 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  35. 35.3/5 − 1/2 =
  36. 36.3/4 − 3/7 =
  37. 37.6/7 − 2/3 =
  38. 38.A bottle has 3/4 litre of juice. Riya drinks 1/8 litre. How much juice is left (in litres)? =
  39. 39.2/3 − 1/9 =
  40. 40.Sara has a ribbon 9/10 m long and cuts off 4/5 m. How long is the ribbon now (in m)? =

Answer key

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

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