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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 96 · 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. 1.543² =
  2. 2.7560² =
  3. 3.340² =
  4. 4.8737² =
  5. 5.1748² =
  6. 6.416² =
  7. 7.960² =
  8. 8.8198² =
  9. 9.960² =
  10. 10.8123² =
  11. 11.5815² =
  12. 12.7424² =
  13. 13.1014² =
  14. 14.191² =
  15. 15.434² =
  16. 16.988² =
  17. 17.7847² =
  18. 18.899² =
  19. 19.865² =
  20. 20.504² =
  21. 21.779² =
  22. 22.802² =
  23. 23.7527² =
  24. 24.480² =
  25. 25.4966² =
  26. 26.835² =
  27. 27.9007² =
  28. 28.687² =
  29. 29.712² =
  30. 30.871² =
  31. 31.278² =
  32. 32.2869² =
  33. 33.184² =
  34. 34.7916² =
  35. 35.355² =
  36. 36.8395² =
  37. 37.128² =
  38. 38.143² =
  39. 39.872² =
  40. 40.6244² =

Answer key

  1. 294849
  2. 57153600
  3. 115600
  4. 76335169
  5. 3055504
  6. 173056
  7. 921600
  8. 67207204
  9. 921600
  10. 65983129
  11. 33814225
  12. 55115776
  13. 1028196
  14. 36481
  15. 188356
  16. 976144
  17. 61575409
  18. 808201
  19. 748225
  20. 254016
  21. 606841
  22. 643204
  23. 56655729
  24. 230400
  25. 24661156
  26. 697225
  27. 81126049
  28. 471969
  29. 506944
  30. 758641
  31. 77284
  32. 8231161
  33. 33856
  34. 62663056
  35. 126025
  36. 70476025
  37. 16384
  38. 20449
  39. 760384
  40. 38987536

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