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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 676 · 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. 1.1245² =
  2. 2.554² =
  3. 3.380² =
  4. 4.201² =
  5. 5.857² =
  6. 6.164² =
  7. 7.9764² =
  8. 8.573² =
  9. 9.266² =
  10. 10.747² =
  11. 11.1042² =
  12. 12.6530² =
  13. 13.316² =
  14. 14.382² =
  15. 15.818² =
  16. 16.472² =
  17. 17.663² =
  18. 18.511² =
  19. 19.490² =
  20. 20.233² =
  21. 21.6356² =
  22. 22.894² =
  23. 23.3281² =
  24. 24.145² =
  25. 25.6707² =
  26. 26.249² =
  27. 27.576² =
  28. 28.588² =
  29. 29.244² =
  30. 30.421² =
  31. 31.596² =
  32. 32.822² =
  33. 33.4719² =
  34. 34.8850² =
  35. 35.6372² =
  36. 36.752² =
  37. 37.917² =
  38. 38.839² =
  39. 39.278² =
  40. 40.664² =

Answer key

  1. 1550025
  2. 306916
  3. 144400
  4. 40401
  5. 734449
  6. 26896
  7. 95335696
  8. 328329
  9. 70756
  10. 558009
  11. 1085764
  12. 42640900
  13. 99856
  14. 145924
  15. 669124
  16. 222784
  17. 439569
  18. 261121
  19. 240100
  20. 54289
  21. 40398736
  22. 799236
  23. 10764961
  24. 21025
  25. 44983849
  26. 62001
  27. 331776
  28. 345744
  29. 59536
  30. 177241
  31. 355216
  32. 675684
  33. 22268961
  34. 78322500
  35. 40602384
  36. 565504
  37. 840889
  38. 703921
  39. 77284
  40. 440896

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