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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 161 · 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. 1.517² =
  2. 2.554² =
  3. 3.163² =
  4. 4.245² =
  5. 5.932² =
  6. 6.846² =
  7. 7.222² =
  8. 8.2945² =
  9. 9.3756² =
  10. 10.9772² =
  11. 11.666² =
  12. 12.5157² =
  13. 13.191² =
  14. 14.1377² =
  15. 15.8870² =
  16. 16.5726² =
  17. 17.973² =
  18. 18.380² =
  19. 19.5276² =
  20. 20.8535² =
  21. 21.3372² =
  22. 22.5685² =
  23. 23.4245² =
  24. 24.641² =
  25. 25.896² =
  26. 26.475² =
  27. 27.327² =
  28. 28.1049² =
  29. 29.215² =
  30. 30.7628² =
  31. 31.376² =
  32. 32.7722² =
  33. 33.886² =
  34. 34.861² =
  35. 35.547² =
  36. 36.514² =
  37. 37.4989² =
  38. 38.742² =
  39. 39.6316² =
  40. 40.957² =

Answer key

  1. 267289
  2. 306916
  3. 26569
  4. 60025
  5. 868624
  6. 715716
  7. 49284
  8. 8673025
  9. 14107536
  10. 95491984
  11. 443556
  12. 26594649
  13. 36481
  14. 1896129
  15. 78676900
  16. 32787076
  17. 946729
  18. 144400
  19. 27836176
  20. 72846225
  21. 11370384
  22. 32319225
  23. 18020025
  24. 410881
  25. 802816
  26. 225625
  27. 106929
  28. 1100401
  29. 46225
  30. 58186384
  31. 141376
  32. 59629284
  33. 784996
  34. 741321
  35. 299209
  36. 264196
  37. 24890121
  38. 550564
  39. 39891856
  40. 915849

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