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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 702 · 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. 1.140² =
  2. 2.6734² =
  3. 3.336² =
  4. 4.196² =
  5. 5.746² =
  6. 6.541² =
  7. 7.992² =
  8. 8.273² =
  9. 9.5129² =
  10. 10.796² =
  11. 11.724² =
  12. 12.447² =
  13. 13.971² =
  14. 14.9987² =
  15. 15.1744² =
  16. 16.5763² =
  17. 17.7595² =
  18. 18.893² =
  19. 19.187² =
  20. 20.218² =
  21. 21.272² =
  22. 22.951² =
  23. 23.481² =
  24. 24.943² =
  25. 25.1137² =
  26. 26.6087² =
  27. 27.633² =
  28. 28.5734² =
  29. 29.4104² =
  30. 30.417² =
  31. 31.2807² =
  32. 32.380² =
  33. 33.4572² =
  34. 34.316² =
  35. 35.491² =
  36. 36.117² =
  37. 37.4741² =
  38. 38.443² =
  39. 39.9680² =
  40. 40.262² =

Answer key

  1. 19600
  2. 45346756
  3. 112896
  4. 38416
  5. 556516
  6. 292681
  7. 984064
  8. 74529
  9. 26306641
  10. 633616
  11. 524176
  12. 199809
  13. 942841
  14. 99740169
  15. 3041536
  16. 33212169
  17. 57684025
  18. 797449
  19. 34969
  20. 47524
  21. 73984
  22. 904401
  23. 231361
  24. 889249
  25. 1292769
  26. 37051569
  27. 400689
  28. 32878756
  29. 16842816
  30. 173889
  31. 7879249
  32. 144400
  33. 20903184
  34. 99856
  35. 241081
  36. 13689
  37. 22477081
  38. 196249
  39. 93702400
  40. 68644

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