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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 2 · 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. 1.209² =
  2. 2.232² =
  3. 3.449² =
  4. 4.698² =
  5. 5.4606² =
  6. 6.558² =
  7. 7.7384² =
  8. 8.614² =
  9. 9.9087² =
  10. 10.669² =
  11. 11.367² =
  12. 12.967² =
  13. 13.672² =
  14. 14.6187² =
  15. 15.691² =
  16. 16.5104² =
  17. 17.165² =
  18. 18.862² =
  19. 19.470² =
  20. 20.3280² =
  21. 21.1168² =
  22. 22.445² =
  23. 23.1218² =
  24. 24.853² =
  25. 25.466² =
  26. 26.9704² =
  27. 27.186² =
  28. 28.220² =
  29. 29.354² =
  30. 30.5470² =
  31. 31.7793² =
  32. 32.9894² =
  33. 33.920² =
  34. 34.259² =
  35. 35.5985² =
  36. 36.551² =
  37. 37.134² =
  38. 38.111² =
  39. 39.193² =
  40. 40.535² =

Answer key

  1. 43681
  2. 53824
  3. 201601
  4. 487204
  5. 21215236
  6. 311364
  7. 54523456
  8. 376996
  9. 82573569
  10. 447561
  11. 134689
  12. 935089
  13. 451584
  14. 38278969
  15. 477481
  16. 26050816
  17. 27225
  18. 743044
  19. 220900
  20. 10758400
  21. 1364224
  22. 198025
  23. 1483524
  24. 727609
  25. 217156
  26. 94167616
  27. 34596
  28. 48400
  29. 125316
  30. 29920900
  31. 60730849
  32. 97891236
  33. 846400
  34. 67081
  35. 35820225
  36. 303601
  37. 17956
  38. 12321
  39. 37249
  40. 286225

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