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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 629 · 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. 1.6794² =
  2. 2.703² =
  3. 3.246² =
  4. 4.267² =
  5. 5.4975² =
  6. 6.723² =
  7. 7.856² =
  8. 8.229² =
  9. 9.455² =
  10. 10.681² =
  11. 11.6915² =
  12. 12.751² =
  13. 13.679² =
  14. 14.164² =
  15. 15.1525² =
  16. 16.413² =
  17. 17.443² =
  18. 18.974² =
  19. 19.671² =
  20. 20.8112² =
  21. 21.401² =
  22. 22.7444² =
  23. 23.740² =
  24. 24.514² =
  25. 25.437² =
  26. 26.454² =
  27. 27.941² =
  28. 28.355² =
  29. 29.953² =
  30. 30.2947² =
  31. 31.926² =
  32. 32.515² =
  33. 33.181² =
  34. 34.569² =
  35. 35.5208² =
  36. 36.144² =
  37. 37.278² =
  38. 38.565² =
  39. 39.949² =
  40. 40.813² =

Answer key

  1. 46158436
  2. 494209
  3. 60516
  4. 71289
  5. 24750625
  6. 522729
  7. 732736
  8. 52441
  9. 207025
  10. 463761
  11. 47817225
  12. 564001
  13. 461041
  14. 26896
  15. 2325625
  16. 170569
  17. 196249
  18. 948676
  19. 450241
  20. 65804544
  21. 160801
  22. 55413136
  23. 547600
  24. 264196
  25. 190969
  26. 206116
  27. 885481
  28. 126025
  29. 908209
  30. 8684809
  31. 857476
  32. 265225
  33. 32761
  34. 323761
  35. 27123264
  36. 20736
  37. 77284
  38. 319225
  39. 900601
  40. 660969

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