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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 509 · 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. 1.616² =
  2. 2.4920² =
  3. 3.512² =
  4. 4.1819² =
  5. 5.3101² =
  6. 6.504² =
  7. 7.754² =
  8. 8.4701² =
  9. 9.1905² =
  10. 10.809² =
  11. 11.161² =
  12. 12.787² =
  13. 13.853² =
  14. 14.341² =
  15. 15.5376² =
  16. 16.682² =
  17. 17.129² =
  18. 18.8019² =
  19. 19.7190² =
  20. 20.803² =
  21. 21.532² =
  22. 22.222² =
  23. 23.465² =
  24. 24.400² =
  25. 25.216² =
  26. 26.3706² =
  27. 27.855² =
  28. 28.931² =
  29. 29.8722² =
  30. 30.401² =
  31. 31.568² =
  32. 32.305² =
  33. 33.588² =
  34. 34.914² =
  35. 35.457² =
  36. 36.7991² =
  37. 37.445² =
  38. 38.328² =
  39. 39.847² =
  40. 40.607² =

Answer key

  1. 379456
  2. 24206400
  3. 262144
  4. 3308761
  5. 9616201
  6. 254016
  7. 568516
  8. 22099401
  9. 3629025
  10. 654481
  11. 25921
  12. 619369
  13. 727609
  14. 116281
  15. 28901376
  16. 465124
  17. 16641
  18. 64304361
  19. 51696100
  20. 644809
  21. 283024
  22. 49284
  23. 216225
  24. 160000
  25. 46656
  26. 13734436
  27. 731025
  28. 866761
  29. 76073284
  30. 160801
  31. 322624
  32. 93025
  33. 345744
  34. 835396
  35. 208849
  36. 63856081
  37. 198025
  38. 107584
  39. 717409
  40. 368449

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