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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 660 · 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. 1.1257² =
  2. 2.157² =
  3. 3.890² =
  4. 4.974² =
  5. 5.318² =
  6. 6.935² =
  7. 7.794² =
  8. 8.331² =
  9. 9.3039² =
  10. 10.5344² =
  11. 11.411² =
  12. 12.172² =
  13. 13.962² =
  14. 14.9331² =
  15. 15.683² =
  16. 16.4381² =
  17. 17.692² =
  18. 18.387² =
  19. 19.216² =
  20. 20.411² =
  21. 21.574² =
  22. 22.982² =
  23. 23.4586² =
  24. 24.4412² =
  25. 25.6316² =
  26. 26.683² =
  27. 27.4393² =
  28. 28.755² =
  29. 29.408² =
  30. 30.719² =
  31. 31.2804² =
  32. 32.4236² =
  33. 33.257² =
  34. 34.105² =
  35. 35.4885² =
  36. 36.328² =
  37. 37.8092² =
  38. 38.4697² =
  39. 39.165² =
  40. 40.890² =

Answer key

  1. 1580049
  2. 24649
  3. 792100
  4. 948676
  5. 101124
  6. 874225
  7. 630436
  8. 109561
  9. 9235521
  10. 28558336
  11. 168921
  12. 29584
  13. 925444
  14. 87067561
  15. 466489
  16. 19193161
  17. 478864
  18. 149769
  19. 46656
  20. 168921
  21. 329476
  22. 964324
  23. 21031396
  24. 19465744
  25. 39891856
  26. 466489
  27. 19298449
  28. 570025
  29. 166464
  30. 516961
  31. 7862416
  32. 17943696
  33. 66049
  34. 11025
  35. 23863225
  36. 107584
  37. 65480464
  38. 22061809
  39. 27225
  40. 792100

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