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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 293 · 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. 1.859² =
  2. 2.419² =
  3. 3.351² =
  4. 4.356² =
  5. 5.236² =
  6. 6.898² =
  7. 7.1641² =
  8. 8.234² =
  9. 9.262² =
  10. 10.941² =
  11. 11.2630² =
  12. 12.7277² =
  13. 13.794² =
  14. 14.838² =
  15. 15.6150² =
  16. 16.125² =
  17. 17.217² =
  18. 18.781² =
  19. 19.944² =
  20. 20.3248² =
  21. 21.3397² =
  22. 22.809² =
  23. 23.984² =
  24. 24.813² =
  25. 25.8836² =
  26. 26.507² =
  27. 27.8700² =
  28. 28.8532² =
  29. 29.307² =
  30. 30.451² =
  31. 31.957² =
  32. 32.990² =
  33. 33.141² =
  34. 34.994² =
  35. 35.516² =
  36. 36.3000² =
  37. 37.934² =
  38. 38.4867² =
  39. 39.1098² =
  40. 40.677² =

Answer key

  1. 737881
  2. 175561
  3. 123201
  4. 126736
  5. 55696
  6. 806404
  7. 2692881
  8. 54756
  9. 68644
  10. 885481
  11. 6916900
  12. 52954729
  13. 630436
  14. 702244
  15. 37822500
  16. 15625
  17. 47089
  18. 609961
  19. 891136
  20. 10549504
  21. 11539609
  22. 654481
  23. 968256
  24. 660969
  25. 78074896
  26. 257049
  27. 75690000
  28. 72795024
  29. 94249
  30. 203401
  31. 915849
  32. 980100
  33. 19881
  34. 988036
  35. 266256
  36. 9000000
  37. 872356
  38. 23687689
  39. 1205604
  40. 458329

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