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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 896 · 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. 1.544² =
  2. 2.1306² =
  3. 3.659² =
  4. 4.626² =
  5. 5.344² =
  6. 6.418² =
  7. 7.716² =
  8. 8.528² =
  9. 9.9179² =
  10. 10.400² =
  11. 11.2888² =
  12. 12.6185² =
  13. 13.6643² =
  14. 14.239² =
  15. 15.202² =
  16. 16.161² =
  17. 17.321² =
  18. 18.6284² =
  19. 19.4878² =
  20. 20.478² =
  21. 21.2168² =
  22. 22.769² =
  23. 23.8463² =
  24. 24.432² =
  25. 25.775² =
  26. 26.444² =
  27. 27.392² =
  28. 28.883² =
  29. 29.2478² =
  30. 30.664² =
  31. 31.123² =
  32. 32.8549² =
  33. 33.703² =
  34. 34.2850² =
  35. 35.7868² =
  36. 36.7433² =
  37. 37.943² =
  38. 38.221² =
  39. 39.9007² =
  40. 40.343² =

Answer key

  1. 295936
  2. 1705636
  3. 434281
  4. 391876
  5. 118336
  6. 174724
  7. 512656
  8. 278784
  9. 84254041
  10. 160000
  11. 8340544
  12. 38254225
  13. 44129449
  14. 57121
  15. 40804
  16. 25921
  17. 103041
  18. 39488656
  19. 23794884
  20. 228484
  21. 4700224
  22. 591361
  23. 71622369
  24. 186624
  25. 600625
  26. 197136
  27. 153664
  28. 779689
  29. 6140484
  30. 440896
  31. 15129
  32. 73085401
  33. 494209
  34. 8122500
  35. 61905424
  36. 55249489
  37. 889249
  38. 48841
  39. 81126049
  40. 117649

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