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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 94 · 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. 1.321² =
  2. 2.3460² =
  3. 3.254² =
  4. 4.534² =
  5. 5.5726² =
  6. 6.603² =
  7. 7.3188² =
  8. 8.492² =
  9. 9.172² =
  10. 10.914² =
  11. 11.853² =
  12. 12.7255² =
  13. 13.7962² =
  14. 14.310² =
  15. 15.7270² =
  16. 16.489² =
  17. 17.882² =
  18. 18.709² =
  19. 19.2776² =
  20. 20.2305² =
  21. 21.215² =
  22. 22.510² =
  23. 23.767² =
  24. 24.325² =
  25. 25.189² =
  26. 26.9488² =
  27. 27.8224² =
  28. 28.623² =
  29. 29.984² =
  30. 30.476² =
  31. 31.3402² =
  32. 32.429² =
  33. 33.652² =
  34. 34.1893² =
  35. 35.381² =
  36. 36.5532² =
  37. 37.864² =
  38. 38.992² =
  39. 39.907² =
  40. 40.584² =

Answer key

  1. 103041
  2. 11971600
  3. 64516
  4. 285156
  5. 32787076
  6. 363609
  7. 10163344
  8. 242064
  9. 29584
  10. 835396
  11. 727609
  12. 52635025
  13. 63393444
  14. 96100
  15. 52852900
  16. 239121
  17. 777924
  18. 502681
  19. 7706176
  20. 5313025
  21. 46225
  22. 260100
  23. 588289
  24. 105625
  25. 35721
  26. 90022144
  27. 67634176
  28. 388129
  29. 968256
  30. 226576
  31. 11573604
  32. 184041
  33. 425104
  34. 3583449
  35. 145161
  36. 30603024
  37. 746496
  38. 984064
  39. 822649
  40. 341056

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