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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 624 · 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. 1.5/6 − 3/10 =
  2. 2.9/10 − 3/4 =
  3. 3.Diya has a ribbon 5/6 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  4. 4.5/7 − 1/4 =
  5. 5.4/5 − 3/4 =
  6. 6.7/10 − 1/3 =
  7. 7.A tank is 7/10 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  8. 8.5/9 − 1/3 =
  9. 9.Ishaan has a ribbon 6/7 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  10. 10.3/4 − 4/7 =
  11. 11.7/8 − 3/4 =
  12. 12.3/4 − 2/7 =
  13. 13.A tank is 5/7 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  14. 14.5/8 − 1/6 =
  15. 15.5/6 − 1/10 =
  16. 16.3/4 − 1/10 =
  17. 17.A tank is 2/5 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  18. 18.A bottle has 6/7 litre of juice. Rohan drinks 2/3 litre. How much juice is left (in litres)? =
  19. 19.Meera has a ribbon 3/4 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  20. 20.2/3 − 3/5 =
  21. 21.9/10 − 2/5 =
  22. 22.Vihaan has a ribbon 4/7 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  23. 23.Tara has a ribbon 1/2 m long and cuts off 3/7 m. How long is the ribbon now (in m)? =
  24. 24.7/9 − 2/3 =
  25. 25.Sara has a ribbon 2/3 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  26. 26.2/3 − 2/5 =
  27. 27.A bottle has 4/7 litre of juice. Vihaan drinks 1/3 litre. How much juice is left (in litres)? =
  28. 28.A bottle has 2/3 litre of juice. Arjun drinks 1/9 litre. How much juice is left (in litres)? =
  29. 29.Rohan has a ribbon 1/3 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  30. 30.2/3 − 3/10 =
  31. 31.4/9 − 1/6 =
  32. 32.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? =
  33. 33.A bottle has 4/9 litre of juice. Rohan drinks 1/3 litre. How much juice is left (in litres)? =
  34. 34.3/4 − 5/8 =
  35. 35.5/6 − 4/5 =
  36. 36.A bottle has 3/5 litre of juice. Ishaan drinks 1/10 litre. How much juice is left (in litres)? =
  37. 37.6/7 − 2/3 =
  38. 38.A bottle has 2/3 litre of juice. Kabir drinks 1/6 litre. How much juice is left (in litres)? =
  39. 39.1/2 − 1/9 =
  40. 40.3/4 − 1/6 =

Answer key

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

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