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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 257 · 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. 1.274² =
  2. 2.995² =
  3. 3.3419² =
  4. 4.550² =
  5. 5.755² =
  6. 6.711² =
  7. 7.189² =
  8. 8.985² =
  9. 9.578² =
  10. 10.175² =
  11. 11.961² =
  12. 12.528² =
  13. 13.284² =
  14. 14.1326² =
  15. 15.483² =
  16. 16.585² =
  17. 17.966² =
  18. 18.271² =
  19. 19.6815² =
  20. 20.481² =
  21. 21.341² =
  22. 22.815² =
  23. 23.692² =
  24. 24.737² =
  25. 25.967² =
  26. 26.9301² =
  27. 27.210² =
  28. 28.4215² =
  29. 29.101² =
  30. 30.385² =
  31. 31.771² =
  32. 32.232² =
  33. 33.175² =
  34. 34.286² =
  35. 35.855² =
  36. 36.870² =
  37. 37.1752² =
  38. 38.478² =
  39. 39.712² =
  40. 40.120² =

Answer key

  1. 75076
  2. 990025
  3. 11689561
  4. 302500
  5. 570025
  6. 505521
  7. 35721
  8. 970225
  9. 334084
  10. 30625
  11. 923521
  12. 278784
  13. 80656
  14. 1758276
  15. 233289
  16. 342225
  17. 933156
  18. 73441
  19. 46444225
  20. 231361
  21. 116281
  22. 664225
  23. 478864
  24. 543169
  25. 935089
  26. 86508601
  27. 44100
  28. 17766225
  29. 10201
  30. 148225
  31. 594441
  32. 53824
  33. 30625
  34. 81796
  35. 731025
  36. 756900
  37. 3069504
  38. 228484
  39. 506944
  40. 14400

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