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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 333 · 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. 1.787² =
  2. 2.494² =
  3. 3.5784² =
  4. 4.8970² =
  5. 5.9641² =
  6. 6.983² =
  7. 7.4884² =
  8. 8.753² =
  9. 9.135² =
  10. 10.268² =
  11. 11.679² =
  12. 12.209² =
  13. 13.2325² =
  14. 14.217² =
  15. 15.271² =
  16. 16.4634² =
  17. 17.728² =
  18. 18.417² =
  19. 19.789² =
  20. 20.842² =
  21. 21.329² =
  22. 22.746² =
  23. 23.1091² =
  24. 24.980² =
  25. 25.927² =
  26. 26.266² =
  27. 27.552² =
  28. 28.765² =
  29. 29.146² =
  30. 30.328² =
  31. 31.2836² =
  32. 32.829² =
  33. 33.195² =
  34. 34.524² =
  35. 35.437² =
  36. 36.128² =
  37. 37.579² =
  38. 38.1825² =
  39. 39.347² =
  40. 40.552² =

Answer key

  1. 619369
  2. 244036
  3. 33454656
  4. 80460900
  5. 92948881
  6. 966289
  7. 23853456
  8. 567009
  9. 18225
  10. 71824
  11. 461041
  12. 43681
  13. 5405625
  14. 47089
  15. 73441
  16. 21473956
  17. 529984
  18. 173889
  19. 622521
  20. 708964
  21. 108241
  22. 556516
  23. 1190281
  24. 960400
  25. 859329
  26. 70756
  27. 304704
  28. 585225
  29. 21316
  30. 107584
  31. 8042896
  32. 687241
  33. 38025
  34. 274576
  35. 190969
  36. 16384
  37. 335241
  38. 3330625
  39. 120409
  40. 304704

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