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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 31 · 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. 1.336² =
  2. 2.503² =
  3. 3.466² =
  4. 4.135² =
  5. 5.411² =
  6. 6.121² =
  7. 7.725² =
  8. 8.333² =
  9. 9.5934² =
  10. 10.802² =
  11. 11.885² =
  12. 12.449² =
  13. 13.592² =
  14. 14.261² =
  15. 15.900² =
  16. 16.615² =
  17. 17.3837² =
  18. 18.574² =
  19. 19.9831² =
  20. 20.6074² =
  21. 21.289² =
  22. 22.680² =
  23. 23.446² =
  24. 24.945² =
  25. 25.641² =
  26. 26.391² =
  27. 27.270² =
  28. 28.106² =
  29. 29.4696² =
  30. 30.709² =
  31. 31.483² =
  32. 32.425² =
  33. 33.803² =
  34. 34.4131² =
  35. 35.4176² =
  36. 36.8234² =
  37. 37.9722² =
  38. 38.291² =
  39. 39.6941² =
  40. 40.756² =

Answer key

  1. 112896
  2. 253009
  3. 217156
  4. 18225
  5. 168921
  6. 14641
  7. 525625
  8. 110889
  9. 35212356
  10. 643204
  11. 783225
  12. 201601
  13. 350464
  14. 68121
  15. 810000
  16. 378225
  17. 14722569
  18. 329476
  19. 96648561
  20. 36893476
  21. 83521
  22. 462400
  23. 198916
  24. 893025
  25. 410881
  26. 152881
  27. 72900
  28. 11236
  29. 22052416
  30. 502681
  31. 233289
  32. 180625
  33. 644809
  34. 17065161
  35. 17438976
  36. 67798756
  37. 94517284
  38. 84681
  39. 48177481
  40. 571536

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