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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 792 · 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. 1.370² =
  2. 2.273² =
  3. 3.954² =
  4. 4.173² =
  5. 5.417² =
  6. 6.347² =
  7. 7.4084² =
  8. 8.205² =
  9. 9.788² =
  10. 10.104² =
  11. 11.365² =
  12. 12.639² =
  13. 13.5887² =
  14. 14.9756² =
  15. 15.5001² =
  16. 16.215² =
  17. 17.342² =
  18. 18.279² =
  19. 19.721² =
  20. 20.9677² =
  21. 21.944² =
  22. 22.222² =
  23. 23.982² =
  24. 24.368² =
  25. 25.567² =
  26. 26.904² =
  27. 27.373² =
  28. 28.9274² =
  29. 29.5478² =
  30. 30.8483² =
  31. 31.597² =
  32. 32.232² =
  33. 33.585² =
  34. 34.149² =
  35. 35.358² =
  36. 36.108² =
  37. 37.6613² =
  38. 38.2038² =
  39. 39.5761² =
  40. 40.167² =

Answer key

  1. 136900
  2. 74529
  3. 910116
  4. 29929
  5. 173889
  6. 120409
  7. 16679056
  8. 42025
  9. 620944
  10. 10816
  11. 133225
  12. 408321
  13. 34656769
  14. 95179536
  15. 25010001
  16. 46225
  17. 116964
  18. 77841
  19. 519841
  20. 93644329
  21. 891136
  22. 49284
  23. 964324
  24. 135424
  25. 321489
  26. 817216
  27. 139129
  28. 86007076
  29. 30008484
  30. 71961289
  31. 356409
  32. 53824
  33. 342225
  34. 22201
  35. 128164
  36. 11664
  37. 43731769
  38. 4153444
  39. 33189121
  40. 27889

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