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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 462 · 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. 1.6440² =
  2. 2.814² =
  3. 3.303² =
  4. 4.9718² =
  5. 5.382² =
  6. 6.904² =
  7. 7.191² =
  8. 8.3551² =
  9. 9.4598² =
  10. 10.207² =
  11. 11.547² =
  12. 12.584² =
  13. 13.7495² =
  14. 14.2303² =
  15. 15.8815² =
  16. 16.820² =
  17. 17.768² =
  18. 18.4111² =
  19. 19.980² =
  20. 20.834² =
  21. 21.3266² =
  22. 22.7465² =
  23. 23.772² =
  24. 24.429² =
  25. 25.298² =
  26. 26.4796² =
  27. 27.519² =
  28. 28.256² =
  29. 29.533² =
  30. 30.207² =
  31. 31.357² =
  32. 32.363² =
  33. 33.966² =
  34. 34.179² =
  35. 35.355² =
  36. 36.182² =
  37. 37.5435² =
  38. 38.793² =
  39. 39.117² =
  40. 40.786² =

Answer key

  1. 41473600
  2. 662596
  3. 91809
  4. 94439524
  5. 145924
  6. 817216
  7. 36481
  8. 12609601
  9. 21141604
  10. 42849
  11. 299209
  12. 341056
  13. 56175025
  14. 5303809
  15. 77704225
  16. 672400
  17. 589824
  18. 16900321
  19. 960400
  20. 695556
  21. 10666756
  22. 55726225
  23. 595984
  24. 184041
  25. 88804
  26. 23001616
  27. 269361
  28. 65536
  29. 284089
  30. 42849
  31. 127449
  32. 131769
  33. 933156
  34. 32041
  35. 126025
  36. 33124
  37. 29539225
  38. 628849
  39. 13689
  40. 617796

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