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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 364 · 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. 1.514² =
  2. 2.827² =
  3. 3.427² =
  4. 4.3884² =
  5. 5.6581² =
  6. 6.902² =
  7. 7.763² =
  8. 8.113² =
  9. 9.541² =
  10. 10.640² =
  11. 11.172² =
  12. 12.546² =
  13. 13.277² =
  14. 14.782² =
  15. 15.262² =
  16. 16.624² =
  17. 17.436² =
  18. 18.4727² =
  19. 19.664² =
  20. 20.667² =
  21. 21.2894² =
  22. 22.287² =
  23. 23.6149² =
  24. 24.870² =
  25. 25.285² =
  26. 26.679² =
  27. 27.451² =
  28. 28.1894² =
  29. 29.4906² =
  30. 30.967² =
  31. 31.388² =
  32. 32.1517² =
  33. 33.767² =
  34. 34.661² =
  35. 35.715² =
  36. 36.381² =
  37. 37.744² =
  38. 38.331² =
  39. 39.917² =
  40. 40.148² =

Answer key

  1. 264196
  2. 683929
  3. 182329
  4. 15085456
  5. 43309561
  6. 813604
  7. 582169
  8. 12769
  9. 292681
  10. 409600
  11. 29584
  12. 298116
  13. 76729
  14. 611524
  15. 68644
  16. 389376
  17. 190096
  18. 22344529
  19. 440896
  20. 444889
  21. 8375236
  22. 82369
  23. 37810201
  24. 756900
  25. 81225
  26. 461041
  27. 203401
  28. 3587236
  29. 24068836
  30. 935089
  31. 150544
  32. 2301289
  33. 588289
  34. 436921
  35. 511225
  36. 145161
  37. 553536
  38. 109561
  39. 840889
  40. 21904

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