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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 662 · 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. 1.1760² =
  2. 2.107² =
  3. 3.219² =
  4. 4.278² =
  5. 5.582² =
  6. 6.719² =
  7. 7.283² =
  8. 8.547² =
  9. 9.865² =
  10. 10.3366² =
  11. 11.327² =
  12. 12.758² =
  13. 13.844² =
  14. 14.889² =
  15. 15.936² =
  16. 16.928² =
  17. 17.8684² =
  18. 18.371² =
  19. 19.766² =
  20. 20.3083² =
  21. 21.742² =
  22. 22.917² =
  23. 23.564² =
  24. 24.8467² =
  25. 25.7042² =
  26. 26.667² =
  27. 27.2694² =
  28. 28.981² =
  29. 29.930² =
  30. 30.163² =
  31. 31.950² =
  32. 32.740² =
  33. 33.7056² =
  34. 34.732² =
  35. 35.777² =
  36. 36.610² =
  37. 37.153² =
  38. 38.782² =
  39. 39.832² =
  40. 40.956² =

Answer key

  1. 3097600
  2. 11449
  3. 47961
  4. 77284
  5. 338724
  6. 516961
  7. 80089
  8. 299209
  9. 748225
  10. 11329956
  11. 106929
  12. 574564
  13. 712336
  14. 790321
  15. 876096
  16. 861184
  17. 75411856
  18. 137641
  19. 586756
  20. 9504889
  21. 550564
  22. 840889
  23. 318096
  24. 71690089
  25. 49589764
  26. 444889
  27. 7257636
  28. 962361
  29. 864900
  30. 26569
  31. 902500
  32. 547600
  33. 49787136
  34. 535824
  35. 603729
  36. 372100
  37. 23409
  38. 611524
  39. 692224
  40. 913936

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