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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 489 · 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. 1.7/10 − 1/5 =
  2. 2.A bottle has 7/8 litre of juice. Anaya drinks 2/3 litre. How much juice is left (in litres)? =
  3. 3.1/2 − 1/9 =
  4. 4.Kabir has a ribbon 2/5 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  5. 5.A tank is 9/10 full of water. Then water filling 3/4 of the tank is used. What fraction of the tank is full now? =
  6. 6.6/7 − 1/4 =
  7. 7.3/4 − 7/10 =
  8. 8.A tank is 2/7 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  9. 9.5/6 − 3/8 =
  10. 10.A tank is 5/7 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  11. 11.4/7 − 1/3 =
  12. 12.7/8 − 3/4 =
  13. 13.A tank is 2/3 full of water. Then water filling 4/7 of the tank is used. What fraction of the tank is full now? =
  14. 14.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? =
  15. 15.3/4 − 2/5 =
  16. 16.A tank is 3/4 full of water. Then water filling 3/7 of the tank is used. What fraction of the tank is full now? =
  17. 17.2/3 − 2/9 =
  18. 18.Aarav has a ribbon 3/4 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  19. 19.Meera has a ribbon 8/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  20. 20.A bottle has 5/9 litre of juice. Anaya drinks 1/2 litre. How much juice is left (in litres)? =
  21. 21.7/10 − 3/5 =
  22. 22.Diya has a ribbon 3/5 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  23. 23.3/4 − 1/5 =
  24. 24.1/2 − 2/5 =
  25. 25.A bottle has 9/10 litre of juice. Meera drinks 3/4 litre. How much juice is left (in litres)? =
  26. 26.A bottle has 1/6 litre of juice. Aarav drinks 1/8 litre. How much juice is left (in litres)? =
  27. 27.A tank is 5/6 full of water. Then water filling 4/5 of the tank is used. What fraction of the tank is full now? =
  28. 28.5/6 − 7/10 =
  29. 29.Kabir has a ribbon 7/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  30. 30.3/7 − 1/4 =
  31. 31.A tank is 2/3 full of water. Then water filling 3/7 of the tank is used. What fraction of the tank is full now? =
  32. 32.Meera has a ribbon 3/4 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  33. 33.7/9 − 2/3 =
  34. 34.A bottle has 1/4 litre of juice. Arjun drinks 1/6 litre. How much juice is left (in litres)? =
  35. 35.Tara has a ribbon 1/4 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  36. 36.A tank is 3/4 full of water. Then water filling 3/8 of the tank is used. What fraction of the tank is full now? =
  37. 37.5/6 − 1/4 =
  38. 38.A tank is 1/3 full of water. Then water filling 2/9 of the tank is used. What fraction of the tank is full now? =
  39. 39.A tank is 7/8 full of water. Then water filling 5/6 of the tank is used. What fraction of the tank is full now? =
  40. 40.A bottle has 7/10 litre of juice. Tara drinks 1/5 litre. How much juice is left (in litres)? =

Answer key

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

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