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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 233 · 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. 1.967² =
  2. 2.6309² =
  3. 3.566² =
  4. 4.681² =
  5. 5.421² =
  6. 6.837² =
  7. 7.8706² =
  8. 8.971² =
  9. 9.273² =
  10. 10.987² =
  11. 11.971² =
  12. 12.9796² =
  13. 13.150² =
  14. 14.248² =
  15. 15.596² =
  16. 16.854² =
  17. 17.961² =
  18. 18.694² =
  19. 19.1882² =
  20. 20.251² =
  21. 21.404² =
  22. 22.160² =
  23. 23.937² =
  24. 24.570² =
  25. 25.5151² =
  26. 26.298² =
  27. 27.878² =
  28. 28.913² =
  29. 29.715² =
  30. 30.858² =
  31. 31.1077² =
  32. 32.604² =
  33. 33.289² =
  34. 34.9235² =
  35. 35.718² =
  36. 36.920² =
  37. 37.7270² =
  38. 38.731² =
  39. 39.182² =
  40. 40.731² =

Answer key

  1. 935089
  2. 39803481
  3. 320356
  4. 463761
  5. 177241
  6. 700569
  7. 75794436
  8. 942841
  9. 74529
  10. 974169
  11. 942841
  12. 95961616
  13. 22500
  14. 61504
  15. 355216
  16. 729316
  17. 923521
  18. 481636
  19. 3541924
  20. 63001
  21. 163216
  22. 25600
  23. 877969
  24. 324900
  25. 26532801
  26. 88804
  27. 770884
  28. 833569
  29. 511225
  30. 736164
  31. 1159929
  32. 364816
  33. 83521
  34. 85285225
  35. 515524
  36. 846400
  37. 52852900
  38. 534361
  39. 33124
  40. 534361

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