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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 368 · 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. 1.6567² =
  2. 2.418² =
  3. 3.670² =
  4. 4.309² =
  5. 5.963² =
  6. 6.147² =
  7. 7.502² =
  8. 8.5333² =
  9. 9.443² =
  10. 10.778² =
  11. 11.795² =
  12. 12.606² =
  13. 13.336² =
  14. 14.4262² =
  15. 15.333² =
  16. 16.778² =
  17. 17.5376² =
  18. 18.8827² =
  19. 19.388² =
  20. 20.905² =
  21. 21.917² =
  22. 22.3597² =
  23. 23.550² =
  24. 24.559² =
  25. 25.960² =
  26. 26.684² =
  27. 27.133² =
  28. 28.489² =
  29. 29.250² =
  30. 30.293² =
  31. 31.3873² =
  32. 32.6618² =
  33. 33.655² =
  34. 34.2991² =
  35. 35.183² =
  36. 36.614² =
  37. 37.264² =
  38. 38.845² =
  39. 39.661² =
  40. 40.236² =

Answer key

  1. 43125489
  2. 174724
  3. 448900
  4. 95481
  5. 927369
  6. 21609
  7. 252004
  8. 28440889
  9. 196249
  10. 605284
  11. 632025
  12. 367236
  13. 112896
  14. 18164644
  15. 110889
  16. 605284
  17. 28901376
  18. 77915929
  19. 150544
  20. 819025
  21. 840889
  22. 12938409
  23. 302500
  24. 312481
  25. 921600
  26. 467856
  27. 17689
  28. 239121
  29. 62500
  30. 85849
  31. 15000129
  32. 43797924
  33. 429025
  34. 8946081
  35. 33489
  36. 376996
  37. 69696
  38. 714025
  39. 436921
  40. 55696

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