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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 363 · 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. 1.3/4 − 1/8 =
  2. 2.Kabir has a ribbon 1/2 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  3. 3.A bottle has 4/7 litre of juice. Meera drinks 1/2 litre. How much juice is left (in litres)? =
  4. 4.4/5 − 3/4 =
  5. 5.A tank is 2/3 full of water. Then water filling 5/9 of the tank is used. What fraction of the tank is full now? =
  6. 6.A tank is 1/5 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  7. 7.9/10 − 3/5 =
  8. 8.7/9 − 2/3 =
  9. 9.3/4 − 5/7 =
  10. 10.1/2 − 3/7 =
  11. 11.Meera has a ribbon 4/7 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  12. 12.A tank is 2/3 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  13. 13.7/8 − 3/4 =
  14. 14.7/8 − 1/2 =
  15. 15.A bottle has 5/8 litre of juice. Rohan drinks 1/2 litre. How much juice is left (in litres)? =
  16. 16.Diya has a ribbon 1/4 m long and cuts off 1/8 m. How long is the ribbon now (in m)? =
  17. 17.A bottle has 2/3 litre of juice. Anaya drinks 3/5 litre. How much juice is left (in litres)? =
  18. 18.3/5 − 3/10 =
  19. 19.2/5 − 1/10 =
  20. 20.1/3 − 1/5 =
  21. 21.3/4 − 3/8 =
  22. 22.3/4 − 3/10 =
  23. 23.Rohan has a ribbon 7/10 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  24. 24.A bottle has 4/5 litre of juice. Anaya drinks 2/3 litre. How much juice is left (in litres)? =
  25. 25.1/4 − 1/6 =
  26. 26.A tank is 4/9 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  27. 27.2/3 − 2/5 =
  28. 28.Vihaan has a ribbon 7/10 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  29. 29.A bottle has 4/5 litre of juice. Meera drinks 1/10 litre. How much juice is left (in litres)? =
  30. 30.7/8 − 1/6 =
  31. 31.A tank is 3/8 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  32. 32.3/7 − 1/3 =
  33. 33.Arjun has a ribbon 8/9 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  34. 34.Tara has a ribbon 7/9 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  35. 35.A bottle has 5/8 litre of juice. Sara drinks 1/6 litre. How much juice is left (in litres)? =
  36. 36.4/5 − 1/2 =
  37. 37.A bottle has 3/4 litre of juice. Riya drinks 2/5 litre. How much juice is left (in litres)? =
  38. 38.3/4 − 2/3 =
  39. 39.2/5 − 1/4 =
  40. 40.5/9 − 1/3 =

Answer key

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

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