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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 473 · 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. 1.775² =
  2. 2.881² =
  3. 3.999² =
  4. 4.2617² =
  5. 5.6787² =
  6. 6.749² =
  7. 7.261² =
  8. 8.596² =
  9. 9.937² =
  10. 10.5311² =
  11. 11.453² =
  12. 12.615² =
  13. 13.3201² =
  14. 14.506² =
  15. 15.8247² =
  16. 16.7041² =
  17. 17.232² =
  18. 18.1209² =
  19. 19.710² =
  20. 20.209² =
  21. 21.5405² =
  22. 22.6190² =
  23. 23.971² =
  24. 24.435² =
  25. 25.843² =
  26. 26.464² =
  27. 27.687² =
  28. 28.343² =
  29. 29.881² =
  30. 30.131² =
  31. 31.324² =
  32. 32.110² =
  33. 33.695² =
  34. 34.958² =
  35. 35.6030² =
  36. 36.1818² =
  37. 37.9748² =
  38. 38.116² =
  39. 39.377² =
  40. 40.979² =

Answer key

  1. 600625
  2. 776161
  3. 998001
  4. 6848689
  5. 46063369
  6. 561001
  7. 68121
  8. 355216
  9. 877969
  10. 28206721
  11. 205209
  12. 378225
  13. 10246401
  14. 256036
  15. 68013009
  16. 49575681
  17. 53824
  18. 1461681
  19. 504100
  20. 43681
  21. 29214025
  22. 38316100
  23. 942841
  24. 189225
  25. 710649
  26. 215296
  27. 471969
  28. 117649
  29. 776161
  30. 17161
  31. 104976
  32. 12100
  33. 483025
  34. 917764
  35. 36360900
  36. 3305124
  37. 95023504
  38. 13456
  39. 142129
  40. 958441

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