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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 386 · 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. 1.984² =
  2. 2.947² =
  3. 3.694² =
  4. 4.288² =
  5. 5.718² =
  6. 6.699² =
  7. 7.108² =
  8. 8.801² =
  9. 9.314² =
  10. 10.579² =
  11. 11.406² =
  12. 12.107² =
  13. 13.853² =
  14. 14.924² =
  15. 15.605² =
  16. 16.963² =
  17. 17.104² =
  18. 18.157² =
  19. 19.584² =
  20. 20.5322² =
  21. 21.622² =
  22. 22.5061² =
  23. 23.2748² =
  24. 24.751² =
  25. 25.966² =
  26. 26.588² =
  27. 27.519² =
  28. 28.242² =
  29. 29.639² =
  30. 30.3808² =
  31. 31.2669² =
  32. 32.950² =
  33. 33.310² =
  34. 34.692² =
  35. 35.3856² =
  36. 36.297² =
  37. 37.935² =
  38. 38.812² =
  39. 39.422² =
  40. 40.8940² =

Answer key

  1. 968256
  2. 896809
  3. 481636
  4. 82944
  5. 515524
  6. 488601
  7. 11664
  8. 641601
  9. 98596
  10. 335241
  11. 164836
  12. 11449
  13. 727609
  14. 853776
  15. 366025
  16. 927369
  17. 10816
  18. 24649
  19. 341056
  20. 28323684
  21. 386884
  22. 25613721
  23. 7551504
  24. 564001
  25. 933156
  26. 345744
  27. 269361
  28. 58564
  29. 408321
  30. 14500864
  31. 7123561
  32. 902500
  33. 96100
  34. 478864
  35. 14868736
  36. 88209
  37. 874225
  38. 659344
  39. 178084
  40. 79923600

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