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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 295 · 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. 1.841² =
  2. 2.146² =
  3. 3.2050² =
  4. 4.967² =
  5. 5.754² =
  6. 6.306² =
  7. 7.937² =
  8. 8.924² =
  9. 9.741² =
  10. 10.1204² =
  11. 11.272² =
  12. 12.481² =
  13. 13.236² =
  14. 14.532² =
  15. 15.546² =
  16. 16.3314² =
  17. 17.1026² =
  18. 18.584² =
  19. 19.319² =
  20. 20.830² =
  21. 21.620² =
  22. 22.487² =
  23. 23.491² =
  24. 24.8703² =
  25. 25.841² =
  26. 26.258² =
  27. 27.2900² =
  28. 28.820² =
  29. 29.847² =
  30. 30.785² =
  31. 31.598² =
  32. 32.131² =
  33. 33.707² =
  34. 34.3995² =
  35. 35.4830² =
  36. 36.980² =
  37. 37.704² =
  38. 38.867² =
  39. 39.3407² =
  40. 40.7721² =

Answer key

  1. 707281
  2. 21316
  3. 4202500
  4. 935089
  5. 568516
  6. 93636
  7. 877969
  8. 853776
  9. 549081
  10. 1449616
  11. 73984
  12. 231361
  13. 55696
  14. 283024
  15. 298116
  16. 10982596
  17. 1052676
  18. 341056
  19. 101761
  20. 688900
  21. 384400
  22. 237169
  23. 241081
  24. 75742209
  25. 707281
  26. 66564
  27. 8410000
  28. 672400
  29. 717409
  30. 616225
  31. 357604
  32. 17161
  33. 499849
  34. 15960025
  35. 23328900
  36. 960400
  37. 495616
  38. 751689
  39. 11607649
  40. 59613841

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