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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 413 · 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. 1.629² =
  2. 2.171² =
  3. 3.798² =
  4. 4.677² =
  5. 5.314² =
  6. 6.184² =
  7. 7.962² =
  8. 8.3415² =
  9. 9.249² =
  10. 10.141² =
  11. 11.116² =
  12. 12.646² =
  13. 13.1477² =
  14. 14.893² =
  15. 15.939² =
  16. 16.5615² =
  17. 17.7063² =
  18. 18.107² =
  19. 19.6551² =
  20. 20.213² =
  21. 21.176² =
  22. 22.477² =
  23. 23.850² =
  24. 24.4918² =
  25. 25.990² =
  26. 26.466² =
  27. 27.3092² =
  28. 28.814² =
  29. 29.812² =
  30. 30.802² =
  31. 31.5092² =
  32. 32.910² =
  33. 33.987² =
  34. 34.1863² =
  35. 35.2855² =
  36. 36.549² =
  37. 37.115² =
  38. 38.281² =
  39. 39.771² =
  40. 40.292² =

Answer key

  1. 395641
  2. 29241
  3. 636804
  4. 458329
  5. 98596
  6. 33856
  7. 925444
  8. 11662225
  9. 62001
  10. 19881
  11. 13456
  12. 417316
  13. 2181529
  14. 797449
  15. 881721
  16. 31528225
  17. 49885969
  18. 11449
  19. 42915601
  20. 45369
  21. 30976
  22. 227529
  23. 722500
  24. 24186724
  25. 980100
  26. 217156
  27. 9560464
  28. 662596
  29. 659344
  30. 643204
  31. 25928464
  32. 828100
  33. 974169
  34. 3470769
  35. 8151025
  36. 301401
  37. 13225
  38. 78961
  39. 594441
  40. 85264

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