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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 633 · 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. 1.842² =
  2. 2.633² =
  3. 3.397² =
  4. 4.240² =
  5. 5.210² =
  6. 6.977² =
  7. 7.282² =
  8. 8.395² =
  9. 9.3917² =
  10. 10.105² =
  11. 11.643² =
  12. 12.6082² =
  13. 13.138² =
  14. 14.188² =
  15. 15.423² =
  16. 16.875² =
  17. 17.265² =
  18. 18.655² =
  19. 19.633² =
  20. 20.209² =
  21. 21.7468² =
  22. 22.6777² =
  23. 23.6902² =
  24. 24.2123² =
  25. 25.403² =
  26. 26.472² =
  27. 27.535² =
  28. 28.184² =
  29. 29.878² =
  30. 30.753² =
  31. 31.3455² =
  32. 32.369² =
  33. 33.4165² =
  34. 34.4736² =
  35. 35.714² =
  36. 36.830² =
  37. 37.888² =
  38. 38.1546² =
  39. 39.583² =
  40. 40.3718² =

Answer key

  1. 708964
  2. 400689
  3. 157609
  4. 57600
  5. 44100
  6. 954529
  7. 79524
  8. 156025
  9. 15342889
  10. 11025
  11. 413449
  12. 36990724
  13. 19044
  14. 35344
  15. 178929
  16. 765625
  17. 70225
  18. 429025
  19. 400689
  20. 43681
  21. 55771024
  22. 45927729
  23. 47637604
  24. 4507129
  25. 162409
  26. 222784
  27. 286225
  28. 33856
  29. 770884
  30. 567009
  31. 11937025
  32. 136161
  33. 17347225
  34. 22429696
  35. 509796
  36. 688900
  37. 788544
  38. 2390116
  39. 339889
  40. 13823524

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