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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 324 · 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. 1.724² =
  2. 2.258² =
  3. 3.799² =
  4. 4.1240² =
  5. 5.291² =
  6. 6.2751² =
  7. 7.749² =
  8. 8.2674² =
  9. 9.3127² =
  10. 10.104² =
  11. 11.3018² =
  12. 12.813² =
  13. 13.8741² =
  14. 14.2006² =
  15. 15.225² =
  16. 16.2515² =
  17. 17.124² =
  18. 18.925² =
  19. 19.783² =
  20. 20.322² =
  21. 21.882² =
  22. 22.434² =
  23. 23.507² =
  24. 24.922² =
  25. 25.215² =
  26. 26.206² =
  27. 27.275² =
  28. 28.788² =
  29. 29.215² =
  30. 30.934² =
  31. 31.897² =
  32. 32.5247² =
  33. 33.3977² =
  34. 34.114² =
  35. 35.126² =
  36. 36.582² =
  37. 37.480² =
  38. 38.367² =
  39. 39.2782² =
  40. 40.544² =

Answer key

  1. 524176
  2. 66564
  3. 638401
  4. 1537600
  5. 84681
  6. 7568001
  7. 561001
  8. 7150276
  9. 9778129
  10. 10816
  11. 9108324
  12. 660969
  13. 76405081
  14. 4024036
  15. 50625
  16. 6325225
  17. 15376
  18. 855625
  19. 613089
  20. 103684
  21. 777924
  22. 188356
  23. 257049
  24. 850084
  25. 46225
  26. 42436
  27. 75625
  28. 620944
  29. 46225
  30. 872356
  31. 804609
  32. 27531009
  33. 15816529
  34. 12996
  35. 15876
  36. 338724
  37. 230400
  38. 134689
  39. 7739524
  40. 295936

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