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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 472 · 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. 1.3/4 − 3/10 =
  2. 2.A bottle has 3/4 litre of juice. Kabir drinks 2/5 litre. How much juice is left (in litres)? =
  3. 3.Anaya has a ribbon 2/3 m long and cuts off 5/9 m. How long is the ribbon now (in m)? =
  4. 4.9/10 − 2/5 =
  5. 5.Ishaan has a ribbon 3/10 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  6. 6.A bottle has 2/3 litre of juice. Rohan drinks 2/7 litre. How much juice is left (in litres)? =
  7. 7.A bottle has 1/2 litre of juice. Kabir drinks 1/10 litre. How much juice is left (in litres)? =
  8. 8.A bottle has 3/5 litre of juice. Arjun drinks 1/2 litre. How much juice is left (in litres)? =
  9. 9.A bottle has 7/10 litre of juice. Rohan drinks 1/5 litre. How much juice is left (in litres)? =
  10. 10.Anaya has a ribbon 5/6 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  11. 11.6/7 − 1/4 =
  12. 12.A tank is 5/6 full of water. Then water filling 4/9 of the tank is used. What fraction of the tank is full now? =
  13. 13.Kabir has a ribbon 5/7 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  14. 14.5/7 − 1/2 =
  15. 15.Aarav has a ribbon 2/3 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  16. 16.A tank is 2/3 full of water. Then water filling 2/9 of the tank is used. What fraction of the tank is full now? =
  17. 17.5/7 − 2/3 =
  18. 18.3/4 − 2/3 =
  19. 19.A bottle has 3/4 litre of juice. Arjun drinks 1/6 litre. How much juice is left (in litres)? =
  20. 20.2/3 − 3/5 =
  21. 21.A tank is 3/4 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  22. 22.Rohan has a ribbon 2/3 m long and cuts off 2/9 m. How long is the ribbon now (in m)? =
  23. 23.1/3 − 2/9 =
  24. 24.3/5 − 1/4 =
  25. 25.Meera has a ribbon 6/7 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  26. 26.9/10 − 1/4 =
  27. 27.A bottle has 5/8 litre of juice. Kabir drinks 1/2 litre. How much juice is left (in litres)? =
  28. 28.Kabir has a ribbon 2/3 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  29. 29.A bottle has 2/3 litre of juice. Meera drinks 2/7 litre. How much juice is left (in litres)? =
  30. 30.3/4 − 3/7 =
  31. 31.8/9 − 5/6 =
  32. 32.A bottle has 9/10 litre of juice. Arjun drinks 5/6 litre. How much juice is left (in litres)? =
  33. 33.Tara has a ribbon 5/7 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  34. 34.1/3 − 1/10 =
  35. 35.8/9 − 1/2 =
  36. 36.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? =
  37. 37.Aarav has a ribbon 4/7 m long and cuts off 1/4 m. How long is the ribbon now (in m)? =
  38. 38.2/3 − 2/9 =
  39. 39.A bottle has 5/6 litre of juice. Rohan drinks 3/10 litre. How much juice is left (in litres)? =
  40. 40.A bottle has 5/8 litre of juice. Kabir drinks 1/3 litre. How much juice is left (in litres)? =

Answer key

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

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