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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 57 · 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. 1.1/4 − 1/6 =
  2. 2.A bottle has 4/5 litre of juice. Meera drinks 2/3 litre. How much juice is left (in litres)? =
  3. 3.3/4 − 7/10 =
  4. 4.4/5 − 1/3 =
  5. 5.5/6 − 3/8 =
  6. 6.5/6 − 7/9 =
  7. 7.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? =
  8. 8.6/7 − 3/4 =
  9. 9.9/10 − 5/6 =
  10. 10.1/2 − 1/4 =
  11. 11.7/9 − 1/2 =
  12. 12.A bottle has 2/3 litre of juice. Arjun drinks 1/7 litre. How much juice is left (in litres)? =
  13. 13.Aarav has a ribbon 9/10 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  14. 14.1/2 − 2/9 =
  15. 15.7/8 − 3/4 =
  16. 16.5/6 − 4/9 =
  17. 17.3/4 − 5/8 =
  18. 18.Meera has a ribbon 9/10 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  19. 19.1/4 − 1/5 =
  20. 20.3/5 − 1/4 =
  21. 21.2/3 − 3/7 =
  22. 22.2/3 − 5/8 =
  23. 23.1/3 − 1/7 =
  24. 24.Diya has a ribbon 2/3 m long and cuts off 3/7 m. How long is the ribbon now (in m)? =
  25. 25.A bottle has 2/3 litre of juice. Meera drinks 3/5 litre. How much juice is left (in litres)? =
  26. 26.5/6 − 2/5 =
  27. 27.A tank is 3/7 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  28. 28.1/2 − 1/10 =
  29. 29.A tank is 3/4 full of water. Then water filling 4/7 of the tank is used. What fraction of the tank is full now? =
  30. 30.A tank is 3/5 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  31. 31.2/3 − 4/9 =
  32. 32.2/5 − 1/10 =
  33. 33.4/5 − 3/10 =
  34. 34.Anaya has a ribbon 1/3 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  35. 35.A bottle has 6/7 litre of juice. Meera drinks 1/3 litre. How much juice is left (in litres)? =
  36. 36.Sara has a ribbon 1/3 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  37. 37.8/9 − 1/3 =
  38. 38.1/2 − 1/7 =
  39. 39.3/5 − 1/3 =
  40. 40.3/8 − 1/6 =

Answer key

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

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