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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 415 · 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.A bottle has 7/8 litre of juice. Riya drinks 1/4 litre. How much juice is left (in litres)? =
  2. 2.A bottle has 1/2 litre of juice. Arjun drinks 3/8 litre. How much juice is left (in litres)? =
  3. 3.4/5 − 3/10 =
  4. 4.Riya has a ribbon 1/2 m long and cuts off 2/7 m. How long is the ribbon now (in m)? =
  5. 5.A tank is 1/2 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  6. 6.Kabir has a ribbon 5/9 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  7. 7.A bottle has 1/4 litre of juice. Anaya drinks 1/7 litre. How much juice is left (in litres)? =
  8. 8.6/7 − 1/2 =
  9. 9.A bottle has 1/2 litre of juice. Riya drinks 4/9 litre. How much juice is left (in litres)? =
  10. 10.3/8 − 1/6 =
  11. 11.Tara has a ribbon 2/3 m long and cuts off 2/9 m. How long is the ribbon now (in m)? =
  12. 12.A tank is 1/2 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  13. 13.3/4 − 1/8 =
  14. 14.3/4 − 4/7 =
  15. 15.2/3 − 4/7 =
  16. 16.1/3 − 1/6 =
  17. 17.3/4 − 1/7 =
  18. 18.3/4 − 2/3 =
  19. 19.3/5 − 1/2 =
  20. 20.Kabir has a ribbon 2/3 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  21. 21.A bottle has 1/2 litre of juice. Kabir drinks 1/8 litre. How much juice is left (in litres)? =
  22. 22.A bottle has 9/10 litre of juice. Tara drinks 3/5 litre. How much juice is left (in litres)? =
  23. 23.Diya has a ribbon 1/3 m long and cuts off 2/9 m. How long is the ribbon now (in m)? =
  24. 24.Sara has a ribbon 2/3 m long and cuts off 1/6 m. How long is the ribbon now (in m)? =
  25. 25.3/4 − 1/5 =
  26. 26.A bottle has 7/10 litre of juice. Anaya drinks 1/6 litre. How much juice is left (in litres)? =
  27. 27.A bottle has 2/3 litre of juice. Kabir drinks 5/8 litre. How much juice is left (in litres)? =
  28. 28.A bottle has 3/4 litre of juice. Kabir drinks 1/2 litre. How much juice is left (in litres)? =
  29. 29.Aarav has a ribbon 4/9 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  30. 30.A tank is 2/3 full of water. Then water filling 3/8 of the tank is used. What fraction of the tank is full now? =
  31. 31.1/2 − 4/9 =
  32. 32.7/9 − 1/6 =
  33. 33.7/10 − 1/5 =
  34. 34.A bottle has 3/4 litre of juice. Vihaan drinks 2/7 litre. How much juice is left (in litres)? =
  35. 35.Sara has a ribbon 3/5 m long and cuts off 1/10 m. How long is the ribbon now (in m)? =
  36. 36.Ishaan has a ribbon 4/5 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  37. 37.2/7 − 1/4 =
  38. 38.Meera has a ribbon 3/8 m long and cuts off 1/3 m. How long is the ribbon now (in m)? =
  39. 39.4/5 − 2/3 =
  40. 40.A bottle has 1/2 litre of juice. Aarav drinks 1/7 litre. How much juice is left (in litres)? =

Answer key

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

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