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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 955 · 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. 1.555² =
  2. 2.2796² =
  3. 3.357² =
  4. 4.627² =
  5. 5.549² =
  6. 6.457² =
  7. 7.2556² =
  8. 8.888² =
  9. 9.5959² =
  10. 10.348² =
  11. 11.8373² =
  12. 12.499² =
  13. 13.830² =
  14. 14.290² =
  15. 15.3943² =
  16. 16.708² =
  17. 17.342² =
  18. 18.7770² =
  19. 19.3245² =
  20. 20.232² =
  21. 21.9025² =
  22. 22.6659² =
  23. 23.749² =
  24. 24.325² =
  25. 25.630² =
  26. 26.934² =
  27. 27.794² =
  28. 28.443² =
  29. 29.634² =
  30. 30.910² =
  31. 31.825² =
  32. 32.737² =
  33. 33.3627² =
  34. 34.3483² =
  35. 35.208² =
  36. 36.102² =
  37. 37.219² =
  38. 38.945² =
  39. 39.999² =
  40. 40.1694² =

Answer key

  1. 308025
  2. 7817616
  3. 127449
  4. 393129
  5. 301401
  6. 208849
  7. 6533136
  8. 788544
  9. 35509681
  10. 121104
  11. 70107129
  12. 249001
  13. 688900
  14. 84100
  15. 15547249
  16. 501264
  17. 116964
  18. 60372900
  19. 10530025
  20. 53824
  21. 81450625
  22. 44342281
  23. 561001
  24. 105625
  25. 396900
  26. 872356
  27. 630436
  28. 196249
  29. 401956
  30. 828100
  31. 680625
  32. 543169
  33. 13155129
  34. 12131289
  35. 43264
  36. 10404
  37. 47961
  38. 893025
  39. 998001
  40. 2869636

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