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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 445 · 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. 1.401² =
  2. 2.4392² =
  3. 3.718² =
  4. 4.9586² =
  5. 5.236² =
  6. 6.159² =
  7. 7.377² =
  8. 8.3842² =
  9. 9.7453² =
  10. 10.480² =
  11. 11.121² =
  12. 12.3172² =
  13. 13.790² =
  14. 14.699² =
  15. 15.7972² =
  16. 16.925² =
  17. 17.452² =
  18. 18.986² =
  19. 19.884² =
  20. 20.5659² =
  21. 21.831² =
  22. 22.375² =
  23. 23.9464² =
  24. 24.278² =
  25. 25.923² =
  26. 26.838² =
  27. 27.701² =
  28. 28.5476² =
  29. 29.651² =
  30. 30.444² =
  31. 31.365² =
  32. 32.656² =
  33. 33.232² =
  34. 34.285² =
  35. 35.199² =
  36. 36.2291² =
  37. 37.243² =
  38. 38.404² =
  39. 39.6879² =
  40. 40.231² =

Answer key

  1. 160801
  2. 19289664
  3. 515524
  4. 91891396
  5. 55696
  6. 25281
  7. 142129
  8. 14760964
  9. 55547209
  10. 230400
  11. 14641
  12. 10061584
  13. 624100
  14. 488601
  15. 63552784
  16. 855625
  17. 204304
  18. 972196
  19. 781456
  20. 32024281
  21. 690561
  22. 140625
  23. 89567296
  24. 77284
  25. 851929
  26. 702244
  27. 491401
  28. 29986576
  29. 423801
  30. 197136
  31. 133225
  32. 430336
  33. 53824
  34. 81225
  35. 39601
  36. 5248681
  37. 59049
  38. 163216
  39. 47320641
  40. 53361

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