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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 136 · 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. 1.158² =
  2. 2.3630² =
  3. 3.4967² =
  4. 4.9430² =
  5. 5.968² =
  6. 6.114² =
  7. 7.429² =
  8. 8.5327² =
  9. 9.584² =
  10. 10.727² =
  11. 11.713² =
  12. 12.220² =
  13. 13.680² =
  14. 14.285² =
  15. 15.1256² =
  16. 16.381² =
  17. 17.812² =
  18. 18.390² =
  19. 19.656² =
  20. 20.490² =
  21. 21.438² =
  22. 22.548² =
  23. 23.947² =
  24. 24.733² =
  25. 25.884² =
  26. 26.393² =
  27. 27.218² =
  28. 28.263² =
  29. 29.184² =
  30. 30.319² =
  31. 31.872² =
  32. 32.509² =
  33. 33.266² =
  34. 34.6427² =
  35. 35.668² =
  36. 36.980² =
  37. 37.292² =
  38. 38.1565² =
  39. 39.3978² =
  40. 40.912² =

Answer key

  1. 24964
  2. 13176900
  3. 24671089
  4. 88924900
  5. 937024
  6. 12996
  7. 184041
  8. 28376929
  9. 341056
  10. 528529
  11. 508369
  12. 48400
  13. 462400
  14. 81225
  15. 1577536
  16. 145161
  17. 659344
  18. 152100
  19. 430336
  20. 240100
  21. 191844
  22. 300304
  23. 896809
  24. 537289
  25. 781456
  26. 154449
  27. 47524
  28. 69169
  29. 33856
  30. 101761
  31. 760384
  32. 259081
  33. 70756
  34. 41306329
  35. 446224
  36. 960400
  37. 85264
  38. 2449225
  39. 15824484
  40. 831744

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