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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 798 · 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. 1.657² =
  2. 2.746² =
  3. 3.4652² =
  4. 4.8259² =
  5. 5.571² =
  6. 6.478² =
  7. 7.580² =
  8. 8.7003² =
  9. 9.7781² =
  10. 10.7868² =
  11. 11.2137² =
  12. 12.3398² =
  13. 13.535² =
  14. 14.292² =
  15. 15.641² =
  16. 16.525² =
  17. 17.247² =
  18. 18.729² =
  19. 19.6865² =
  20. 20.555² =
  21. 21.1884² =
  22. 22.4820² =
  23. 23.9778² =
  24. 24.342² =
  25. 25.148² =
  26. 26.268² =
  27. 27.851² =
  28. 28.2291² =
  29. 29.9993² =
  30. 30.687² =
  31. 31.132² =
  32. 32.281² =
  33. 33.8527² =
  34. 34.123² =
  35. 35.609² =
  36. 36.1189² =
  37. 37.310² =
  38. 38.227² =
  39. 39.688² =
  40. 40.716² =

Answer key

  1. 431649
  2. 556516
  3. 21641104
  4. 68211081
  5. 326041
  6. 228484
  7. 336400
  8. 49042009
  9. 60543961
  10. 61905424
  11. 4566769
  12. 11546404
  13. 286225
  14. 85264
  15. 410881
  16. 275625
  17. 61009
  18. 531441
  19. 47128225
  20. 308025
  21. 3549456
  22. 23232400
  23. 95609284
  24. 116964
  25. 21904
  26. 71824
  27. 724201
  28. 5248681
  29. 99860049
  30. 471969
  31. 17424
  32. 78961
  33. 72709729
  34. 15129
  35. 370881
  36. 1413721
  37. 96100
  38. 51529
  39. 473344
  40. 512656

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