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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 421 · 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. 1.955² =
  2. 2.972² =
  3. 3.831² =
  4. 4.6910² =
  5. 5.136² =
  6. 6.5080² =
  7. 7.569² =
  8. 8.166² =
  9. 9.326² =
  10. 10.933² =
  11. 11.842² =
  12. 12.193² =
  13. 13.152² =
  14. 14.1840² =
  15. 15.893² =
  16. 16.943² =
  17. 17.611² =
  18. 18.847² =
  19. 19.106² =
  20. 20.926² =
  21. 21.110² =
  22. 22.517² =
  23. 23.293² =
  24. 24.203² =
  25. 25.804² =
  26. 26.6297² =
  27. 27.225² =
  28. 28.872² =
  29. 29.593² =
  30. 30.479² =
  31. 31.783² =
  32. 32.195² =
  33. 33.2949² =
  34. 34.353² =
  35. 35.4868² =
  36. 36.434² =
  37. 37.7654² =
  38. 38.4326² =
  39. 39.772² =
  40. 40.7129² =

Answer key

  1. 912025
  2. 944784
  3. 690561
  4. 47748100
  5. 18496
  6. 25806400
  7. 323761
  8. 27556
  9. 106276
  10. 870489
  11. 708964
  12. 37249
  13. 23104
  14. 3385600
  15. 797449
  16. 889249
  17. 373321
  18. 717409
  19. 11236
  20. 857476
  21. 12100
  22. 267289
  23. 85849
  24. 41209
  25. 646416
  26. 39652209
  27. 50625
  28. 760384
  29. 351649
  30. 229441
  31. 613089
  32. 38025
  33. 8696601
  34. 124609
  35. 23697424
  36. 188356
  37. 58583716
  38. 18714276
  39. 595984
  40. 50822641

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