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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 127 · 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. 1.675² =
  2. 2.456² =
  3. 3.3750² =
  4. 4.868² =
  5. 5.6461² =
  6. 6.194² =
  7. 7.1436² =
  8. 8.7582² =
  9. 9.169² =
  10. 10.711² =
  11. 11.476² =
  12. 12.2842² =
  13. 13.735² =
  14. 14.3594² =
  15. 15.544² =
  16. 16.1641² =
  17. 17.670² =
  18. 18.160² =
  19. 19.5829² =
  20. 20.424² =
  21. 21.5094² =
  22. 22.659² =
  23. 23.328² =
  24. 24.859² =
  25. 25.8914² =
  26. 26.6796² =
  27. 27.4200² =
  28. 28.607² =
  29. 29.752² =
  30. 30.756² =
  31. 31.294² =
  32. 32.328² =
  33. 33.568² =
  34. 34.572² =
  35. 35.523² =
  36. 36.2762² =
  37. 37.2674² =
  38. 38.2011² =
  39. 39.458² =
  40. 40.394² =

Answer key

  1. 455625
  2. 207936
  3. 14062500
  4. 753424
  5. 41744521
  6. 37636
  7. 2062096
  8. 57486724
  9. 28561
  10. 505521
  11. 226576
  12. 8076964
  13. 540225
  14. 12916836
  15. 295936
  16. 2692881
  17. 448900
  18. 25600
  19. 33977241
  20. 179776
  21. 25948836
  22. 434281
  23. 107584
  24. 737881
  25. 79459396
  26. 46185616
  27. 17640000
  28. 368449
  29. 565504
  30. 571536
  31. 86436
  32. 107584
  33. 322624
  34. 327184
  35. 273529
  36. 7628644
  37. 7150276
  38. 4044121
  39. 209764
  40. 155236

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