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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 994 · 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 − 3/4 =
  2. 2.1/4 − 1/8 =
  3. 3.7/9 − 1/2 =
  4. 4.2/3 − 5/8 =
  5. 5.A tank is 9/10 full of water. Then water filling 4/5 of the tank is used. What fraction of the tank is full now? =
  6. 6.1/3 − 2/7 =
  7. 7.6/7 − 1/2 =
  8. 8.2/5 − 1/6 =
  9. 9.A bottle has 2/9 litre of juice. Rohan drinks 1/6 litre. How much juice is left (in litres)? =
  10. 10.2/3 − 4/9 =
  11. 11.3/8 − 1/6 =
  12. 12.6/7 − 2/3 =
  13. 13.6/7 − 1/3 =
  14. 14.A bottle has 1/2 litre of juice. Sara drinks 1/6 litre. How much juice is left (in litres)? =
  15. 15.7/10 − 2/5 =
  16. 16.2/3 − 3/5 =
  17. 17.Riya has a ribbon 2/3 m long and cuts off 5/8 m. How long is the ribbon now (in m)? =
  18. 18.A bottle has 4/7 litre of juice. Kabir drinks 1/2 litre. How much juice is left (in litres)? =
  19. 19.Meera has a ribbon 7/10 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  20. 20.A bottle has 4/7 litre of juice. Ishaan drinks 1/2 litre. How much juice is left (in litres)? =
  21. 21.2/3 − 1/8 =
  22. 22.A tank is 1/2 full of water. Then water filling 4/9 of the tank is used. What fraction of the tank is full now? =
  23. 23.Arjun has a ribbon 2/3 m long and cuts off 3/5 m. How long is the ribbon now (in m)? =
  24. 24.7/10 − 3/5 =
  25. 25.A bottle has 7/8 litre of juice. Kabir drinks 1/6 litre. How much juice is left (in litres)? =
  26. 26.9/10 − 2/3 =
  27. 27.7/10 − 1/4 =
  28. 28.5/7 − 1/2 =
  29. 29.A bottle has 7/10 litre of juice. Tara drinks 3/5 litre. How much juice is left (in litres)? =
  30. 30.3/4 − 1/10 =
  31. 31.7/9 − 2/3 =
  32. 32.3/4 − 3/7 =
  33. 33.2/3 − 1/6 =
  34. 34.Kabir has a ribbon 1/6 m long and cuts off 1/9 m. How long is the ribbon now (in m)? =
  35. 35.A tank is 3/4 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  36. 36.A tank is 6/7 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  37. 37.Riya has a ribbon 1/2 m long and cuts off 3/7 m. How long is the ribbon now (in m)? =
  38. 38.A tank is 5/6 full of water. Then water filling 1/8 of the tank is used. What fraction of the tank is full now? =
  39. 39.A bottle has 5/6 litre of juice. Meera drinks 7/10 litre. How much juice is left (in litres)? =
  40. 40.9/10 − 3/5 =

Answer key

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

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