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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 779 · 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. 1.5802² =
  2. 2.305² =
  3. 3.129² =
  4. 4.603² =
  5. 5.4830² =
  6. 6.875² =
  7. 7.453² =
  8. 8.188² =
  9. 9.737² =
  10. 10.5301² =
  11. 11.475² =
  12. 12.145² =
  13. 13.714² =
  14. 14.186² =
  15. 15.995² =
  16. 16.760² =
  17. 17.8959² =
  18. 18.421² =
  19. 19.771² =
  20. 20.186² =
  21. 21.687² =
  22. 22.138² =
  23. 23.4274² =
  24. 24.402² =
  25. 25.404² =
  26. 26.339² =
  27. 27.215² =
  28. 28.977² =
  29. 29.704² =
  30. 30.1594² =
  31. 31.202² =
  32. 32.190² =
  33. 33.218² =
  34. 34.5169² =
  35. 35.1769² =
  36. 36.1210² =
  37. 37.657² =
  38. 38.930² =
  39. 39.891² =
  40. 40.3508² =

Answer key

  1. 33663204
  2. 93025
  3. 16641
  4. 363609
  5. 23328900
  6. 765625
  7. 205209
  8. 35344
  9. 543169
  10. 28100601
  11. 225625
  12. 21025
  13. 509796
  14. 34596
  15. 990025
  16. 577600
  17. 80263681
  18. 177241
  19. 594441
  20. 34596
  21. 471969
  22. 19044
  23. 18267076
  24. 161604
  25. 163216
  26. 114921
  27. 46225
  28. 954529
  29. 495616
  30. 2540836
  31. 40804
  32. 36100
  33. 47524
  34. 26718561
  35. 3129361
  36. 1464100
  37. 431649
  38. 864900
  39. 793881
  40. 12306064

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