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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 532 · 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. 1.185² =
  2. 2.406² =
  3. 3.353² =
  4. 4.783² =
  5. 5.2576² =
  6. 6.8948² =
  7. 7.702² =
  8. 8.693² =
  9. 9.337² =
  10. 10.558² =
  11. 11.688² =
  12. 12.7568² =
  13. 13.1419² =
  14. 14.5198² =
  15. 15.899² =
  16. 16.5236² =
  17. 17.447² =
  18. 18.407² =
  19. 19.9213² =
  20. 20.968² =
  21. 21.515² =
  22. 22.680² =
  23. 23.519² =
  24. 24.309² =
  25. 25.8520² =
  26. 26.1413² =
  27. 27.2730² =
  28. 28.2487² =
  29. 29.185² =
  30. 30.841² =
  31. 31.462² =
  32. 32.395² =
  33. 33.543² =
  34. 34.438² =
  35. 35.144² =
  36. 36.385² =
  37. 37.2861² =
  38. 38.250² =
  39. 39.6333² =
  40. 40.579² =

Answer key

  1. 34225
  2. 164836
  3. 124609
  4. 613089
  5. 6635776
  6. 80066704
  7. 492804
  8. 480249
  9. 113569
  10. 311364
  11. 473344
  12. 57274624
  13. 2013561
  14. 27019204
  15. 808201
  16. 27415696
  17. 199809
  18. 165649
  19. 84879369
  20. 937024
  21. 265225
  22. 462400
  23. 269361
  24. 95481
  25. 72590400
  26. 1996569
  27. 7452900
  28. 6185169
  29. 34225
  30. 707281
  31. 213444
  32. 156025
  33. 294849
  34. 191844
  35. 20736
  36. 148225
  37. 8185321
  38. 62500
  39. 40106889
  40. 335241

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