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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 881 · 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. 1.826² =
  2. 2.825² =
  3. 3.620² =
  4. 4.730² =
  5. 5.4430² =
  6. 6.7768² =
  7. 7.405² =
  8. 8.275² =
  9. 9.542² =
  10. 10.204² =
  11. 11.7391² =
  12. 12.492² =
  13. 13.865² =
  14. 14.223² =
  15. 15.5029² =
  16. 16.520² =
  17. 17.408² =
  18. 18.3132² =
  19. 19.3804² =
  20. 20.7699² =
  21. 21.221² =
  22. 22.956² =
  23. 23.466² =
  24. 24.2854² =
  25. 25.1250² =
  26. 26.947² =
  27. 27.187² =
  28. 28.969² =
  29. 29.2535² =
  30. 30.8731² =
  31. 31.362² =
  32. 32.475² =
  33. 33.530² =
  34. 34.541² =
  35. 35.602² =
  36. 36.386² =
  37. 37.6698² =
  38. 38.4783² =
  39. 39.783² =
  40. 40.698² =

Answer key

  1. 682276
  2. 680625
  3. 384400
  4. 532900
  5. 19624900
  6. 60341824
  7. 164025
  8. 75625
  9. 293764
  10. 41616
  11. 54626881
  12. 242064
  13. 748225
  14. 49729
  15. 25290841
  16. 270400
  17. 166464
  18. 9809424
  19. 14470416
  20. 59274601
  21. 48841
  22. 913936
  23. 217156
  24. 8145316
  25. 1562500
  26. 896809
  27. 34969
  28. 938961
  29. 6426225
  30. 76230361
  31. 131044
  32. 225625
  33. 280900
  34. 292681
  35. 362404
  36. 148996
  37. 44863204
  38. 22877089
  39. 613089
  40. 487204

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