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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 22 · 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. 1.143² =
  2. 2.579² =
  3. 3.593² =
  4. 4.862² =
  5. 5.841² =
  6. 6.1030² =
  7. 7.747² =
  8. 8.102² =
  9. 9.718² =
  10. 10.973² =
  11. 11.7662² =
  12. 12.842² =
  13. 13.970² =
  14. 14.848² =
  15. 15.433² =
  16. 16.710² =
  17. 17.172² =
  18. 18.466² =
  19. 19.9358² =
  20. 20.1350² =
  21. 21.242² =
  22. 22.576² =
  23. 23.3075² =
  24. 24.192² =
  25. 25.6760² =
  26. 26.168² =
  27. 27.802² =
  28. 28.3162² =
  29. 29.7426² =
  30. 30.9565² =
  31. 31.4029² =
  32. 32.542² =
  33. 33.132² =
  34. 34.2948² =
  35. 35.320² =
  36. 36.697² =
  37. 37.157² =
  38. 38.633² =
  39. 39.886² =
  40. 40.167² =

Answer key

  1. 20449
  2. 335241
  3. 351649
  4. 743044
  5. 707281
  6. 1060900
  7. 558009
  8. 10404
  9. 515524
  10. 946729
  11. 58706244
  12. 708964
  13. 940900
  14. 719104
  15. 187489
  16. 504100
  17. 29584
  18. 217156
  19. 87572164
  20. 1822500
  21. 58564
  22. 331776
  23. 9455625
  24. 36864
  25. 45697600
  26. 28224
  27. 643204
  28. 9998244
  29. 55145476
  30. 91489225
  31. 16232841
  32. 293764
  33. 17424
  34. 8690704
  35. 102400
  36. 485809
  37. 24649
  38. 400689
  39. 784996
  40. 27889

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