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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 258 · 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. 1.852² =
  2. 2.231² =
  3. 3.286² =
  4. 4.578² =
  5. 5.534² =
  6. 6.331² =
  7. 7.751² =
  8. 8.906² =
  9. 9.283² =
  10. 10.911² =
  11. 11.204² =
  12. 12.677² =
  13. 13.921² =
  14. 14.612² =
  15. 15.2928² =
  16. 16.1362² =
  17. 17.966² =
  18. 18.848² =
  19. 19.5450² =
  20. 20.425² =
  21. 21.3343² =
  22. 22.1579² =
  23. 23.859² =
  24. 24.549² =
  25. 25.8562² =
  26. 26.2763² =
  27. 27.394² =
  28. 28.311² =
  29. 29.272² =
  30. 30.1468² =
  31. 31.4035² =
  32. 32.237² =
  33. 33.3184² =
  34. 34.697² =
  35. 35.4176² =
  36. 36.1064² =
  37. 37.7452² =
  38. 38.604² =
  39. 39.189² =
  40. 40.8127² =

Answer key

  1. 725904
  2. 53361
  3. 81796
  4. 334084
  5. 285156
  6. 109561
  7. 564001
  8. 820836
  9. 80089
  10. 829921
  11. 41616
  12. 458329
  13. 848241
  14. 374544
  15. 8573184
  16. 1855044
  17. 933156
  18. 719104
  19. 29702500
  20. 180625
  21. 11175649
  22. 2493241
  23. 737881
  24. 301401
  25. 73307844
  26. 7634169
  27. 155236
  28. 96721
  29. 73984
  30. 2155024
  31. 16281225
  32. 56169
  33. 10137856
  34. 485809
  35. 17438976
  36. 1132096
  37. 55532304
  38. 364816
  39. 35721
  40. 66048129

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