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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 848 · 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. 1.740² =
  2. 2.1640² =
  3. 3.190² =
  4. 4.431² =
  5. 5.2738² =
  6. 6.5906² =
  7. 7.269² =
  8. 8.1361² =
  9. 9.789² =
  10. 10.9724² =
  11. 11.944² =
  12. 12.797² =
  13. 13.961² =
  14. 14.317² =
  15. 15.133² =
  16. 16.8394² =
  17. 17.538² =
  18. 18.114² =
  19. 19.9887² =
  20. 20.536² =
  21. 21.448² =
  22. 22.8041² =
  23. 23.891² =
  24. 24.302² =
  25. 25.374² =
  26. 26.3764² =
  27. 27.789² =
  28. 28.693² =
  29. 29.444² =
  30. 30.917² =
  31. 31.2522² =
  32. 32.246² =
  33. 33.4439² =
  34. 34.486² =
  35. 35.227² =
  36. 36.488² =
  37. 37.765² =
  38. 38.398² =
  39. 39.441² =
  40. 40.6356² =

Answer key

  1. 547600
  2. 2689600
  3. 36100
  4. 185761
  5. 7496644
  6. 34880836
  7. 72361
  8. 1852321
  9. 622521
  10. 94556176
  11. 891136
  12. 635209
  13. 923521
  14. 100489
  15. 17689
  16. 70459236
  17. 289444
  18. 12996
  19. 97752769
  20. 287296
  21. 200704
  22. 64657681
  23. 793881
  24. 91204
  25. 139876
  26. 14167696
  27. 622521
  28. 480249
  29. 197136
  30. 840889
  31. 6360484
  32. 60516
  33. 19704721
  34. 236196
  35. 51529
  36. 238144
  37. 585225
  38. 158404
  39. 194481
  40. 40398736

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