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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 188 · 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. 1.548² =
  2. 2.413² =
  3. 3.526² =
  4. 4.532² =
  5. 5.482² =
  6. 6.4271² =
  7. 7.220² =
  8. 8.9542² =
  9. 9.494² =
  10. 10.572² =
  11. 11.923² =
  12. 12.4338² =
  13. 13.705² =
  14. 14.9839² =
  15. 15.219² =
  16. 16.7290² =
  17. 17.6490² =
  18. 18.9623² =
  19. 19.514² =
  20. 20.520² =
  21. 21.7205² =
  22. 22.1797² =
  23. 23.3554² =
  24. 24.902² =
  25. 25.550² =
  26. 26.875² =
  27. 27.416² =
  28. 28.674² =
  29. 29.229² =
  30. 30.147² =
  31. 31.145² =
  32. 32.443² =
  33. 33.160² =
  34. 34.8196² =
  35. 35.3160² =
  36. 36.337² =
  37. 37.818² =
  38. 38.3497² =
  39. 39.597² =
  40. 40.6533² =

Answer key

  1. 300304
  2. 170569
  3. 276676
  4. 283024
  5. 232324
  6. 18241441
  7. 48400
  8. 91049764
  9. 244036
  10. 327184
  11. 851929
  12. 18818244
  13. 497025
  14. 96805921
  15. 47961
  16. 53144100
  17. 42120100
  18. 92602129
  19. 264196
  20. 270400
  21. 51912025
  22. 3229209
  23. 12630916
  24. 813604
  25. 302500
  26. 765625
  27. 173056
  28. 454276
  29. 52441
  30. 21609
  31. 21025
  32. 196249
  33. 25600
  34. 67174416
  35. 9985600
  36. 113569
  37. 669124
  38. 12229009
  39. 356409
  40. 42680089

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