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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 440 · 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. 1.7744² =
  2. 2.277² =
  3. 3.379² =
  4. 4.124² =
  5. 5.492² =
  6. 6.729² =
  7. 7.564² =
  8. 8.741² =
  9. 9.8924² =
  10. 10.436² =
  11. 11.931² =
  12. 12.651² =
  13. 13.422² =
  14. 14.143² =
  15. 15.646² =
  16. 16.450² =
  17. 17.923² =
  18. 18.930² =
  19. 19.7751² =
  20. 20.446² =
  21. 21.938² =
  22. 22.525² =
  23. 23.538² =
  24. 24.9216² =
  25. 25.8640² =
  26. 26.932² =
  27. 27.847² =
  28. 28.257² =
  29. 29.889² =
  30. 30.338² =
  31. 31.209² =
  32. 32.610² =
  33. 33.126² =
  34. 34.169² =
  35. 35.565² =
  36. 36.6540² =
  37. 37.307² =
  38. 38.660² =
  39. 39.749² =
  40. 40.383² =

Answer key

  1. 59969536
  2. 76729
  3. 143641
  4. 15376
  5. 242064
  6. 531441
  7. 318096
  8. 549081
  9. 79637776
  10. 190096
  11. 866761
  12. 423801
  13. 178084
  14. 20449
  15. 417316
  16. 202500
  17. 851929
  18. 864900
  19. 60078001
  20. 198916
  21. 879844
  22. 275625
  23. 289444
  24. 84934656
  25. 74649600
  26. 868624
  27. 717409
  28. 66049
  29. 790321
  30. 114244
  31. 43681
  32. 372100
  33. 15876
  34. 28561
  35. 319225
  36. 42771600
  37. 94249
  38. 435600
  39. 561001
  40. 146689

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