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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 203 · 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. 1.659² =
  2. 2.4260² =
  3. 3.710² =
  4. 4.374² =
  5. 5.823² =
  6. 6.1060² =
  7. 7.929² =
  8. 8.970² =
  9. 9.820² =
  10. 10.805² =
  11. 11.250² =
  12. 12.106² =
  13. 13.489² =
  14. 14.648² =
  15. 15.624² =
  16. 16.3591² =
  17. 17.6588² =
  18. 18.3452² =
  19. 19.908² =
  20. 20.465² =
  21. 21.509² =
  22. 22.5721² =
  23. 23.520² =
  24. 24.1110² =
  25. 25.103² =
  26. 26.691² =
  27. 27.358² =
  28. 28.521² =
  29. 29.281² =
  30. 30.472² =
  31. 31.225² =
  32. 32.286² =
  33. 33.153² =
  34. 34.868² =
  35. 35.618² =
  36. 36.2439² =
  37. 37.760² =
  38. 38.315² =
  39. 39.445² =
  40. 40.9958² =

Answer key

  1. 434281
  2. 18147600
  3. 504100
  4. 139876
  5. 677329
  6. 1123600
  7. 863041
  8. 940900
  9. 672400
  10. 648025
  11. 62500
  12. 11236
  13. 239121
  14. 419904
  15. 389376
  16. 12895281
  17. 43401744
  18. 11916304
  19. 824464
  20. 216225
  21. 259081
  22. 32729841
  23. 270400
  24. 1232100
  25. 10609
  26. 477481
  27. 128164
  28. 271441
  29. 78961
  30. 222784
  31. 50625
  32. 81796
  33. 23409
  34. 753424
  35. 381924
  36. 5948721
  37. 577600
  38. 99225
  39. 198025
  40. 99161764

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