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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 420 · 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. 1.844² =
  2. 2.101² =
  3. 3.2088² =
  4. 4.1500² =
  5. 5.820² =
  6. 6.9959² =
  7. 7.532² =
  8. 8.123² =
  9. 9.251² =
  10. 10.1819² =
  11. 11.5967² =
  12. 12.875² =
  13. 13.2833² =
  14. 14.879² =
  15. 15.2913² =
  16. 16.581² =
  17. 17.1848² =
  18. 18.970² =
  19. 19.734² =
  20. 20.4284² =
  21. 21.725² =
  22. 22.8169² =
  23. 23.5149² =
  24. 24.576² =
  25. 25.677² =
  26. 26.448² =
  27. 27.319² =
  28. 28.298² =
  29. 29.8034² =
  30. 30.115² =
  31. 31.714² =
  32. 32.252² =
  33. 33.2963² =
  34. 34.270² =
  35. 35.435² =
  36. 36.255² =
  37. 37.3791² =
  38. 38.4143² =
  39. 39.346² =
  40. 40.4485² =

Answer key

  1. 712336
  2. 10201
  3. 4359744
  4. 2250000
  5. 672400
  6. 99181681
  7. 283024
  8. 15129
  9. 63001
  10. 3308761
  11. 35605089
  12. 765625
  13. 8025889
  14. 772641
  15. 8485569
  16. 337561
  17. 3415104
  18. 940900
  19. 538756
  20. 18352656
  21. 525625
  22. 66732561
  23. 26512201
  24. 331776
  25. 458329
  26. 200704
  27. 101761
  28. 88804
  29. 64545156
  30. 13225
  31. 509796
  32. 63504
  33. 8779369
  34. 72900
  35. 189225
  36. 65025
  37. 14371681
  38. 17164449
  39. 119716
  40. 20115225

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