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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 166 · 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. 1.880² =
  2. 2.884² =
  3. 3.204² =
  4. 4.633² =
  5. 5.666² =
  6. 6.686² =
  7. 7.756² =
  8. 8.5489² =
  9. 9.551² =
  10. 10.629² =
  11. 11.753² =
  12. 12.371² =
  13. 13.572² =
  14. 14.437² =
  15. 15.626² =
  16. 16.1618² =
  17. 17.822² =
  18. 18.2163² =
  19. 19.2833² =
  20. 20.2599² =
  21. 21.337² =
  22. 22.355² =
  23. 23.183² =
  24. 24.575² =
  25. 25.981² =
  26. 26.802² =
  27. 27.709² =
  28. 28.325² =
  29. 29.365² =
  30. 30.774² =
  31. 31.985² =
  32. 32.522² =
  33. 33.140² =
  34. 34.396² =
  35. 35.768² =
  36. 36.331² =
  37. 37.575² =
  38. 38.796² =
  39. 39.763² =
  40. 40.104² =

Answer key

  1. 774400
  2. 781456
  3. 41616
  4. 400689
  5. 443556
  6. 470596
  7. 571536
  8. 30129121
  9. 303601
  10. 395641
  11. 567009
  12. 137641
  13. 327184
  14. 190969
  15. 391876
  16. 2617924
  17. 675684
  18. 4678569
  19. 8025889
  20. 6754801
  21. 113569
  22. 126025
  23. 33489
  24. 330625
  25. 962361
  26. 643204
  27. 502681
  28. 105625
  29. 133225
  30. 599076
  31. 970225
  32. 272484
  33. 19600
  34. 156816
  35. 589824
  36. 109561
  37. 330625
  38. 633616
  39. 582169
  40. 10816

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