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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 849 · 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. 1.1567² =
  2. 2.1590² =
  3. 3.412² =
  4. 4.321² =
  5. 5.683² =
  6. 6.540² =
  7. 7.820² =
  8. 8.790² =
  9. 9.246² =
  10. 10.3234² =
  11. 11.478² =
  12. 12.825² =
  13. 13.2730² =
  14. 14.4139² =
  15. 15.144² =
  16. 16.8170² =
  17. 17.114² =
  18. 18.196² =
  19. 19.103² =
  20. 20.7176² =
  21. 21.182² =
  22. 22.654² =
  23. 23.2783² =
  24. 24.8402² =
  25. 25.3422² =
  26. 26.804² =
  27. 27.1187² =
  28. 28.568² =
  29. 29.782² =
  30. 30.914² =
  31. 31.4475² =
  32. 32.468² =
  33. 33.9478² =
  34. 34.553² =
  35. 35.331² =
  36. 36.908² =
  37. 37.676² =
  38. 38.787² =
  39. 39.106² =
  40. 40.9678² =

Answer key

  1. 2455489
  2. 2528100
  3. 169744
  4. 103041
  5. 466489
  6. 291600
  7. 672400
  8. 624100
  9. 60516
  10. 10458756
  11. 228484
  12. 680625
  13. 7452900
  14. 17131321
  15. 20736
  16. 66748900
  17. 12996
  18. 38416
  19. 10609
  20. 51494976
  21. 33124
  22. 427716
  23. 7745089
  24. 70593604
  25. 11710084
  26. 646416
  27. 1408969
  28. 322624
  29. 611524
  30. 835396
  31. 20025625
  32. 219024
  33. 89832484
  34. 305809
  35. 109561
  36. 824464
  37. 456976
  38. 619369
  39. 11236
  40. 93663684

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