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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 524 · 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. 1.754² =
  2. 2.9855² =
  3. 3.410² =
  4. 4.200² =
  5. 5.915² =
  6. 6.8271² =
  7. 7.277² =
  8. 8.941² =
  9. 9.390² =
  10. 10.659² =
  11. 11.505² =
  12. 12.109² =
  13. 13.812² =
  14. 14.7057² =
  15. 15.468² =
  16. 16.5873² =
  17. 17.738² =
  18. 18.416² =
  19. 19.157² =
  20. 20.8102² =
  21. 21.609² =
  22. 22.2132² =
  23. 23.4108² =
  24. 24.2446² =
  25. 25.6837² =
  26. 26.7153² =
  27. 27.9294² =
  28. 28.281² =
  29. 29.619² =
  30. 30.8076² =
  31. 31.479² =
  32. 32.419² =
  33. 33.1979² =
  34. 34.217² =
  35. 35.619² =
  36. 36.713² =
  37. 37.345² =
  38. 38.727² =
  39. 39.836² =
  40. 40.524² =

Answer key

  1. 568516
  2. 97121025
  3. 168100
  4. 40000
  5. 837225
  6. 68409441
  7. 76729
  8. 885481
  9. 152100
  10. 434281
  11. 255025
  12. 11881
  13. 659344
  14. 49801249
  15. 219024
  16. 34492129
  17. 544644
  18. 173056
  19. 24649
  20. 65642404
  21. 370881
  22. 4545424
  23. 16875664
  24. 5982916
  25. 46744569
  26. 51165409
  27. 86378436
  28. 78961
  29. 383161
  30. 65221776
  31. 229441
  32. 175561
  33. 3916441
  34. 47089
  35. 383161
  36. 508369
  37. 119025
  38. 528529
  39. 698896
  40. 274576

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