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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 197 · 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. 1.2536² =
  2. 2.2555² =
  3. 3.224² =
  4. 4.883² =
  5. 5.882² =
  6. 6.616² =
  7. 7.8116² =
  8. 8.4007² =
  9. 9.3087² =
  10. 10.210² =
  11. 11.1224² =
  12. 12.814² =
  13. 13.646² =
  14. 14.549² =
  15. 15.322² =
  16. 16.6925² =
  17. 17.314² =
  18. 18.706² =
  19. 19.197² =
  20. 20.871² =
  21. 21.476² =
  22. 22.954² =
  23. 23.557² =
  24. 24.935² =
  25. 25.662² =
  26. 26.2160² =
  27. 27.462² =
  28. 28.175² =
  29. 29.1565² =
  30. 30.453² =
  31. 31.210² =
  32. 32.711² =
  33. 33.668² =
  34. 34.427² =
  35. 35.230² =
  36. 36.6765² =
  37. 37.145² =
  38. 38.407² =
  39. 39.7226² =
  40. 40.239² =

Answer key

  1. 6431296
  2. 6528025
  3. 50176
  4. 779689
  5. 777924
  6. 379456
  7. 65869456
  8. 16056049
  9. 9529569
  10. 44100
  11. 1498176
  12. 662596
  13. 417316
  14. 301401
  15. 103684
  16. 47955625
  17. 98596
  18. 498436
  19. 38809
  20. 758641
  21. 226576
  22. 910116
  23. 310249
  24. 874225
  25. 438244
  26. 4665600
  27. 213444
  28. 30625
  29. 2449225
  30. 205209
  31. 44100
  32. 505521
  33. 446224
  34. 182329
  35. 52900
  36. 45765225
  37. 21025
  38. 165649
  39. 52215076
  40. 57121

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