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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 328 · 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. 1.744² =
  2. 2.660² =
  3. 3.9828² =
  4. 4.161² =
  5. 5.2272² =
  6. 6.8728² =
  7. 7.8883² =
  8. 8.749² =
  9. 9.140² =
  10. 10.359² =
  11. 11.189² =
  12. 12.574² =
  13. 13.820² =
  14. 14.953² =
  15. 15.857² =
  16. 16.292² =
  17. 17.9930² =
  18. 18.7864² =
  19. 19.398² =
  20. 20.1725² =
  21. 21.9328² =
  22. 22.365² =
  23. 23.3705² =
  24. 24.208² =
  25. 25.611² =
  26. 26.2317² =
  27. 27.3433² =
  28. 28.2208² =
  29. 29.9944² =
  30. 30.888² =
  31. 31.6381² =
  32. 32.5436² =
  33. 33.5329² =
  34. 34.916² =
  35. 35.395² =
  36. 36.6799² =
  37. 37.1095² =
  38. 38.621² =
  39. 39.9125² =
  40. 40.178² =

Answer key

  1. 553536
  2. 435600
  3. 96589584
  4. 25921
  5. 5161984
  6. 76177984
  7. 78907689
  8. 561001
  9. 19600
  10. 128881
  11. 35721
  12. 329476
  13. 672400
  14. 908209
  15. 734449
  16. 85264
  17. 98604900
  18. 61842496
  19. 158404
  20. 2975625
  21. 87011584
  22. 133225
  23. 13727025
  24. 43264
  25. 373321
  26. 5368489
  27. 11785489
  28. 4875264
  29. 98883136
  30. 788544
  31. 40717161
  32. 29550096
  33. 28398241
  34. 839056
  35. 156025
  36. 46226401
  37. 1199025
  38. 385641
  39. 83265625
  40. 31684

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