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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 112 · 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. 1.807² =
  2. 2.9101² =
  3. 3.2736² =
  4. 4.1205² =
  5. 5.2327² =
  6. 6.648² =
  7. 7.1287² =
  8. 8.373² =
  9. 9.117² =
  10. 10.970² =
  11. 11.464² =
  12. 12.929² =
  13. 13.3807² =
  14. 14.658² =
  15. 15.956² =
  16. 16.251² =
  17. 17.361² =
  18. 18.8657² =
  19. 19.622² =
  20. 20.3634² =
  21. 21.277² =
  22. 22.218² =
  23. 23.139² =
  24. 24.2416² =
  25. 25.983² =
  26. 26.1056² =
  27. 27.339² =
  28. 28.924² =
  29. 29.580² =
  30. 30.657² =
  31. 31.229² =
  32. 32.3972² =
  33. 33.858² =
  34. 34.1385² =
  35. 35.226² =
  36. 36.622² =
  37. 37.678² =
  38. 38.1830² =
  39. 39.913² =
  40. 40.968² =

Answer key

  1. 651249
  2. 82828201
  3. 7485696
  4. 1452025
  5. 5414929
  6. 419904
  7. 1656369
  8. 139129
  9. 13689
  10. 940900
  11. 215296
  12. 863041
  13. 14493249
  14. 432964
  15. 913936
  16. 63001
  17. 130321
  18. 74943649
  19. 386884
  20. 13205956
  21. 76729
  22. 47524
  23. 19321
  24. 5837056
  25. 966289
  26. 1115136
  27. 114921
  28. 853776
  29. 336400
  30. 431649
  31. 52441
  32. 15776784
  33. 736164
  34. 1918225
  35. 51076
  36. 386884
  37. 459684
  38. 3348900
  39. 833569
  40. 937024

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