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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 975 · 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. 1.5351² =
  2. 2.646² =
  3. 3.332² =
  4. 4.941² =
  5. 5.446² =
  6. 6.820² =
  7. 7.448² =
  8. 8.106² =
  9. 9.5053² =
  10. 10.134² =
  11. 11.8759² =
  12. 12.183² =
  13. 13.894² =
  14. 14.308² =
  15. 15.236² =
  16. 16.7946² =
  17. 17.690² =
  18. 18.3739² =
  19. 19.601² =
  20. 20.2684² =
  21. 21.918² =
  22. 22.650² =
  23. 23.765² =
  24. 24.830² =
  25. 25.6555² =
  26. 26.966² =
  27. 27.463² =
  28. 28.3680² =
  29. 29.945² =
  30. 30.208² =
  31. 31.199² =
  32. 32.9795² =
  33. 33.2517² =
  34. 34.8591² =
  35. 35.784² =
  36. 36.7850² =
  37. 37.3086² =
  38. 38.902² =
  39. 39.921² =
  40. 40.697² =

Answer key

  1. 28633201
  2. 417316
  3. 110224
  4. 885481
  5. 198916
  6. 672400
  7. 200704
  8. 11236
  9. 25532809
  10. 17956
  11. 76720081
  12. 33489
  13. 799236
  14. 94864
  15. 55696
  16. 63138916
  17. 476100
  18. 13980121
  19. 361201
  20. 7203856
  21. 842724
  22. 422500
  23. 585225
  24. 688900
  25. 42968025
  26. 933156
  27. 214369
  28. 13542400
  29. 893025
  30. 43264
  31. 39601
  32. 95942025
  33. 6335289
  34. 73805281
  35. 614656
  36. 61622500
  37. 9523396
  38. 813604
  39. 848241
  40. 485809

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