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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 450 · 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. 1.218² =
  2. 2.437² =
  3. 3.1855² =
  4. 4.1150² =
  5. 5.3617² =
  6. 6.616² =
  7. 7.315² =
  8. 8.1414² =
  9. 9.7133² =
  10. 10.977² =
  11. 11.356² =
  12. 12.241² =
  13. 13.184² =
  14. 14.544² =
  15. 15.943² =
  16. 16.348² =
  17. 17.978² =
  18. 18.983² =
  19. 19.740² =
  20. 20.134² =
  21. 21.946² =
  22. 22.137² =
  23. 23.595² =
  24. 24.9684² =
  25. 25.2915² =
  26. 26.5796² =
  27. 27.993² =
  28. 28.2932² =
  29. 29.172² =
  30. 30.6408² =
  31. 31.423² =
  32. 32.307² =
  33. 33.610² =
  34. 34.889² =
  35. 35.695² =
  36. 36.426² =
  37. 37.140² =
  38. 38.4800² =
  39. 39.1482² =
  40. 40.567² =

Answer key

  1. 47524
  2. 190969
  3. 3441025
  4. 1322500
  5. 13082689
  6. 379456
  7. 99225
  8. 1999396
  9. 50879689
  10. 954529
  11. 126736
  12. 58081
  13. 33856
  14. 295936
  15. 889249
  16. 121104
  17. 956484
  18. 966289
  19. 547600
  20. 17956
  21. 894916
  22. 18769
  23. 354025
  24. 93779856
  25. 8497225
  26. 33593616
  27. 986049
  28. 8596624
  29. 29584
  30. 41062464
  31. 178929
  32. 94249
  33. 372100
  34. 790321
  35. 483025
  36. 181476
  37. 19600
  38. 23040000
  39. 2196324
  40. 321489

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