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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 128 · 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. 1.5/7 − 2/3 =
  2. 2.4/7 − 1/3 =
  3. 3.A bottle has 7/10 litre of juice. Arjun drinks 3/5 litre. How much juice is left (in litres)? =
  4. 4.5/6 − 1/4 =
  5. 5.Tara has a ribbon 2/3 m long and cuts off 5/9 m. How long is the ribbon now (in m)? =
  6. 6.A tank is 1/2 full of water. Then water filling 3/10 of the tank is used. What fraction of the tank is full now? =
  7. 7.Anaya has a ribbon 1/6 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  8. 8.A tank is 3/4 full of water. Then water filling 1/7 of the tank is used. What fraction of the tank is full now? =
  9. 9.5/9 − 1/2 =
  10. 10.Sara has a ribbon 1/3 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  11. 11.3/4 − 3/7 =
  12. 12.7/9 − 1/2 =
  13. 13.2/3 − 1/8 =
  14. 14.5/6 − 1/9 =
  15. 15.7/9 − 1/6 =
  16. 16.4/7 − 1/4 =
  17. 17.4/5 − 7/10 =
  18. 18.A bottle has 5/7 litre of juice. Arjun drinks 1/2 litre. How much juice is left (in litres)? =
  19. 19.7/10 − 2/5 =
  20. 20.Arjun has a ribbon 5/6 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  21. 21.7/9 − 2/3 =
  22. 22.A tank is 5/7 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  23. 23.7/8 − 2/3 =
  24. 24.Vihaan has a ribbon 7/10 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  25. 25.Tara has a ribbon 3/7 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  26. 26.A tank is 3/10 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  27. 27.3/4 − 5/7 =
  28. 28.A bottle has 1/3 litre of juice. Kabir drinks 1/8 litre. How much juice is left (in litres)? =
  29. 29.2/3 − 4/7 =
  30. 30.Aarav has a ribbon 2/3 m long and cuts off 4/7 m. How long is the ribbon now (in m)? =
  31. 31.6/7 − 1/3 =
  32. 32.A bottle has 1/3 litre of juice. Diya drinks 1/8 litre. How much juice is left (in litres)? =
  33. 33.1/2 − 2/7 =
  34. 34.Rohan has a ribbon 3/4 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  35. 35.Arjun has a ribbon 9/10 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  36. 36.Kabir has a ribbon 8/9 m long and cuts off 2/3 m. How long is the ribbon now (in m)? =
  37. 37.1/3 − 1/10 =
  38. 38.A bottle has 2/9 litre of juice. Anaya drinks 1/6 litre. How much juice is left (in litres)? =
  39. 39.1/2 − 4/9 =
  40. 40.1/6 − 1/10 =

Answer key

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

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