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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 747 · 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. 1.527² =
  2. 2.1511² =
  3. 3.569² =
  4. 4.312² =
  5. 5.173² =
  6. 6.6615² =
  7. 7.687² =
  8. 8.972² =
  9. 9.876² =
  10. 10.954² =
  11. 11.826² =
  12. 12.627² =
  13. 13.529² =
  14. 14.187² =
  15. 15.590² =
  16. 16.477² =
  17. 17.117² =
  18. 18.547² =
  19. 19.859² =
  20. 20.9388² =
  21. 21.679² =
  22. 22.857² =
  23. 23.784² =
  24. 24.425² =
  25. 25.469² =
  26. 26.918² =
  27. 27.5757² =
  28. 28.906² =
  29. 29.700² =
  30. 30.412² =
  31. 31.446² =
  32. 32.626² =
  33. 33.993² =
  34. 34.684² =
  35. 35.4466² =
  36. 36.657² =
  37. 37.135² =
  38. 38.157² =
  39. 39.164² =
  40. 40.681² =

Answer key

  1. 277729
  2. 2283121
  3. 323761
  4. 97344
  5. 29929
  6. 43758225
  7. 471969
  8. 944784
  9. 767376
  10. 910116
  11. 682276
  12. 393129
  13. 279841
  14. 34969
  15. 348100
  16. 227529
  17. 13689
  18. 299209
  19. 737881
  20. 88134544
  21. 461041
  22. 734449
  23. 614656
  24. 180625
  25. 219961
  26. 842724
  27. 33143049
  28. 820836
  29. 490000
  30. 169744
  31. 198916
  32. 391876
  33. 986049
  34. 467856
  35. 19945156
  36. 431649
  37. 18225
  38. 24649
  39. 26896
  40. 463761

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