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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 581 · 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. 1.639² =
  2. 2.830² =
  3. 3.157² =
  4. 4.7455² =
  5. 5.738² =
  6. 6.892² =
  7. 7.568² =
  8. 8.870² =
  9. 9.9597² =
  10. 10.7188² =
  11. 11.435² =
  12. 12.979² =
  13. 13.2495² =
  14. 14.320² =
  15. 15.3603² =
  16. 16.781² =
  17. 17.308² =
  18. 18.940² =
  19. 19.360² =
  20. 20.487² =
  21. 21.480² =
  22. 22.448² =
  23. 23.213² =
  24. 24.387² =
  25. 25.6488² =
  26. 26.989² =
  27. 27.166² =
  28. 28.885² =
  29. 29.7852² =
  30. 30.3132² =
  31. 31.9475² =
  32. 32.7296² =
  33. 33.7197² =
  34. 34.420² =
  35. 35.672² =
  36. 36.143² =
  37. 37.497² =
  38. 38.902² =
  39. 39.2241² =
  40. 40.308² =

Answer key

  1. 408321
  2. 688900
  3. 24649
  4. 55577025
  5. 544644
  6. 795664
  7. 322624
  8. 756900
  9. 92102409
  10. 51667344
  11. 189225
  12. 958441
  13. 6225025
  14. 102400
  15. 12981609
  16. 609961
  17. 94864
  18. 883600
  19. 129600
  20. 237169
  21. 230400
  22. 200704
  23. 45369
  24. 149769
  25. 42094144
  26. 978121
  27. 27556
  28. 783225
  29. 61653904
  30. 9809424
  31. 89775625
  32. 53231616
  33. 51796809
  34. 176400
  35. 451584
  36. 20449
  37. 247009
  38. 813604
  39. 5022081
  40. 94864

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