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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 70 · 40 sums
TalentJR

The trick (Dwandwa Yoga): For abc: columns D(a) | D(ab) | D(abc) | D(bc) | D(c). D(a) = a², D(ab) = 2ab, D(abc) = 2ac + b², D(abcd) = 2ad + 2bc. Combine from the right with carries.

NameDateTime takenScore ___ / 40
  1. 1.515² =
  2. 2.713² =
  3. 3.875² =
  4. 4.1411² =
  5. 5.816² =
  6. 6.149² =
  7. 7.549² =
  8. 8.7732² =
  9. 9.213² =
  10. 10.935² =
  11. 11.362² =
  12. 12.1936² =
  13. 13.6175² =
  14. 14.994² =
  15. 15.8849² =
  16. 16.852² =
  17. 17.906² =
  18. 18.483² =
  19. 19.7648² =
  20. 20.3994² =
  21. 21.1617² =
  22. 22.993² =
  23. 23.5773² =
  24. 24.1170² =
  25. 25.3893² =
  26. 26.516² =
  27. 27.2902² =
  28. 28.8128² =
  29. 29.177² =
  30. 30.269² =
  31. 31.357² =
  32. 32.703² =
  33. 33.738² =
  34. 34.811² =
  35. 35.951² =
  36. 36.7018² =
  37. 37.7910² =
  38. 38.7057² =
  39. 39.7345² =
  40. 40.544² =

Answer key

  1. 265225
  2. 508369
  3. 765625
  4. 1990921
  5. 665856
  6. 22201
  7. 301401
  8. 59783824
  9. 45369
  10. 874225
  11. 131044
  12. 3748096
  13. 38130625
  14. 988036
  15. 78304801
  16. 725904
  17. 820836
  18. 233289
  19. 58491904
  20. 15952036
  21. 2614689
  22. 986049
  23. 33327529
  24. 1368900
  25. 15155449
  26. 266256
  27. 8421604
  28. 66064384
  29. 31329
  30. 72361
  31. 127449
  32. 494209
  33. 544644
  34. 657721
  35. 904401
  36. 49252324
  37. 62568100
  38. 49801249
  39. 53949025
  40. 295936

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