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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 659 · 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. 1.222² =
  2. 2.254² =
  3. 3.105² =
  4. 4.9928² =
  5. 5.8144² =
  6. 6.6411² =
  7. 7.193² =
  8. 8.7670² =
  9. 9.4655² =
  10. 10.187² =
  11. 11.6658² =
  12. 12.1453² =
  13. 13.2721² =
  14. 14.689² =
  15. 15.850² =
  16. 16.445² =
  17. 17.592² =
  18. 18.333² =
  19. 19.2696² =
  20. 20.5751² =
  21. 21.791² =
  22. 22.807² =
  23. 23.2939² =
  24. 24.7674² =
  25. 25.813² =
  26. 26.704² =
  27. 27.6301² =
  28. 28.410² =
  29. 29.524² =
  30. 30.9976² =
  31. 31.103² =
  32. 32.906² =
  33. 33.7573² =
  34. 34.470² =
  35. 35.2410² =
  36. 36.891² =
  37. 37.233² =
  38. 38.561² =
  39. 39.485² =
  40. 40.466² =

Answer key

  1. 49284
  2. 64516
  3. 11025
  4. 98565184
  5. 66324736
  6. 41100921
  7. 37249
  8. 58828900
  9. 21669025
  10. 34969
  11. 44328964
  12. 2111209
  13. 7403841
  14. 474721
  15. 722500
  16. 198025
  17. 350464
  18. 110889
  19. 7268416
  20. 33074001
  21. 625681
  22. 651249
  23. 8637721
  24. 58890276
  25. 660969
  26. 495616
  27. 39702601
  28. 168100
  29. 274576
  30. 99520576
  31. 10609
  32. 820836
  33. 57350329
  34. 220900
  35. 5808100
  36. 793881
  37. 54289
  38. 314721
  39. 235225
  40. 217156

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