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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 894 · 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. 1.685² =
  2. 2.6472² =
  3. 3.885² =
  4. 4.9706² =
  5. 5.215² =
  6. 6.874² =
  7. 7.554² =
  8. 8.317² =
  9. 9.258² =
  10. 10.797² =
  11. 11.1128² =
  12. 12.806² =
  13. 13.776² =
  14. 14.374² =
  15. 15.995² =
  16. 16.168² =
  17. 17.427² =
  18. 18.249² =
  19. 19.211² =
  20. 20.978² =
  21. 21.168² =
  22. 22.407² =
  23. 23.2936² =
  24. 24.443² =
  25. 25.1977² =
  26. 26.984² =
  27. 27.930² =
  28. 28.949² =
  29. 29.833² =
  30. 30.6972² =
  31. 31.945² =
  32. 32.694² =
  33. 33.983² =
  34. 34.2618² =
  35. 35.869² =
  36. 36.1802² =
  37. 37.567² =
  38. 38.847² =
  39. 39.857² =
  40. 40.446² =

Answer key

  1. 469225
  2. 41886784
  3. 783225
  4. 94206436
  5. 46225
  6. 763876
  7. 306916
  8. 100489
  9. 66564
  10. 635209
  11. 1272384
  12. 649636
  13. 602176
  14. 139876
  15. 990025
  16. 28224
  17. 182329
  18. 62001
  19. 44521
  20. 956484
  21. 28224
  22. 165649
  23. 8620096
  24. 196249
  25. 3908529
  26. 968256
  27. 864900
  28. 900601
  29. 693889
  30. 48608784
  31. 893025
  32. 481636
  33. 966289
  34. 6853924
  35. 755161
  36. 3247204
  37. 321489
  38. 717409
  39. 734449
  40. 198916

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