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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 322 · 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. 1.311² =
  2. 2.1980² =
  3. 3.119² =
  4. 4.171² =
  5. 5.792² =
  6. 6.869² =
  7. 7.109² =
  8. 8.120² =
  9. 9.821² =
  10. 10.599² =
  11. 11.232² =
  12. 12.819² =
  13. 13.658² =
  14. 14.324² =
  15. 15.9403² =
  16. 16.103² =
  17. 17.115² =
  18. 18.849² =
  19. 19.992² =
  20. 20.830² =
  21. 21.141² =
  22. 22.7252² =
  23. 23.7641² =
  24. 24.895² =
  25. 25.939² =
  26. 26.211² =
  27. 27.353² =
  28. 28.754² =
  29. 29.462² =
  30. 30.5402² =
  31. 31.5441² =
  32. 32.534² =
  33. 33.5651² =
  34. 34.411² =
  35. 35.1571² =
  36. 36.868² =
  37. 37.975² =
  38. 38.734² =
  39. 39.9510² =
  40. 40.6665² =

Answer key

  1. 96721
  2. 3920400
  3. 14161
  4. 29241
  5. 627264
  6. 755161
  7. 11881
  8. 14400
  9. 674041
  10. 358801
  11. 53824
  12. 670761
  13. 432964
  14. 104976
  15. 88416409
  16. 10609
  17. 13225
  18. 720801
  19. 984064
  20. 688900
  21. 19881
  22. 52591504
  23. 58384881
  24. 801025
  25. 881721
  26. 44521
  27. 124609
  28. 568516
  29. 213444
  30. 29181604
  31. 29604481
  32. 285156
  33. 31933801
  34. 168921
  35. 2468041
  36. 753424
  37. 950625
  38. 538756
  39. 90440100
  40. 44422225

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