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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 232 · 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. 1.4/5 − 7/10 =
  2. 2.A bottle has 9/10 litre of juice. Kabir drinks 2/5 litre. How much juice is left (in litres)? =
  3. 3.4/9 − 1/6 =
  4. 4.A tank is 1/2 full of water. Then water filling 3/7 of the tank is used. What fraction of the tank is full now? =
  5. 5.A bottle has 1/3 litre of juice. Diya drinks 1/8 litre. How much juice is left (in litres)? =
  6. 6.7/8 − 1/4 =
  7. 7.1/5 − 1/6 =
  8. 8.5/6 − 7/10 =
  9. 9.1/2 − 1/4 =
  10. 10.Arjun has a ribbon 5/8 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  11. 11.A bottle has 5/6 litre of juice. Rohan drinks 1/8 litre. How much juice is left (in litres)? =
  12. 12.A tank is 5/9 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  13. 13.A tank is 9/10 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  14. 14.A bottle has 6/7 litre of juice. Vihaan drinks 2/3 litre. How much juice is left (in litres)? =
  15. 15.Kabir has a ribbon 1/2 m long and cuts off 3/7 m. How long is the ribbon now (in m)? =
  16. 16.1/2 − 1/5 =
  17. 17.4/5 − 1/6 =
  18. 18.A bottle has 8/9 litre of juice. Meera drinks 5/6 litre. How much juice is left (in litres)? =
  19. 19.1/2 − 1/9 =
  20. 20.1/4 − 1/7 =
  21. 21.5/8 − 1/3 =
  22. 22.A tank is 8/9 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  23. 23.9/10 − 1/4 =
  24. 24.3/4 − 3/8 =
  25. 25.A tank is 2/5 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  26. 26.1/2 − 3/8 =
  27. 27.2/5 − 3/10 =
  28. 28.1/3 − 2/9 =
  29. 29.5/9 − 1/3 =
  30. 30.5/6 − 3/5 =
  31. 31.1/2 − 3/7 =
  32. 32.1/4 − 1/10 =
  33. 33.Kabir has a ribbon 1/5 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  34. 34.1/6 − 1/9 =
  35. 35.Arjun has a ribbon 3/4 m long and cuts off 7/10 m. How long is the ribbon now (in m)? =
  36. 36.5/6 − 1/9 =
  37. 37.Aarav has a ribbon 4/5 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  38. 38.A bottle has 1/3 litre of juice. Anaya drinks 2/7 litre. How much juice is left (in litres)? =
  39. 39.A bottle has 5/7 litre of juice. Riya drinks 1/4 litre. How much juice is left (in litres)? =
  40. 40.2/3 − 1/5 =

Answer key

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

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