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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 329 · 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. 1.649² =
  2. 2.992² =
  3. 3.160² =
  4. 4.880² =
  5. 5.1207² =
  6. 6.107² =
  7. 7.977² =
  8. 8.2663² =
  9. 9.917² =
  10. 10.130² =
  11. 11.1083² =
  12. 12.272² =
  13. 13.9445² =
  14. 14.5261² =
  15. 15.2151² =
  16. 16.431² =
  17. 17.9701² =
  18. 18.931² =
  19. 19.160² =
  20. 20.181² =
  21. 21.3279² =
  22. 22.5353² =
  23. 23.940² =
  24. 24.567² =
  25. 25.2775² =
  26. 26.378² =
  27. 27.922² =
  28. 28.135² =
  29. 29.769² =
  30. 30.947² =
  31. 31.4914² =
  32. 32.175² =
  33. 33.277² =
  34. 34.819² =
  35. 35.431² =
  36. 36.793² =
  37. 37.304² =
  38. 38.755² =
  39. 39.8715² =
  40. 40.772² =

Answer key

  1. 421201
  2. 984064
  3. 25600
  4. 774400
  5. 1456849
  6. 11449
  7. 954529
  8. 7091569
  9. 840889
  10. 16900
  11. 1172889
  12. 73984
  13. 89208025
  14. 27678121
  15. 4626801
  16. 185761
  17. 94109401
  18. 866761
  19. 25600
  20. 32761
  21. 10751841
  22. 28654609
  23. 883600
  24. 321489
  25. 7700625
  26. 142884
  27. 850084
  28. 18225
  29. 591361
  30. 896809
  31. 24147396
  32. 30625
  33. 76729
  34. 670761
  35. 185761
  36. 628849
  37. 92416
  38. 570025
  39. 75951225
  40. 595984

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