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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 400 · 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. 1.448² =
  2. 2.2475² =
  3. 3.2757² =
  4. 4.155² =
  5. 5.1247² =
  6. 6.6957² =
  7. 7.334² =
  8. 8.410² =
  9. 9.795² =
  10. 10.126² =
  11. 11.227² =
  12. 12.463² =
  13. 13.6984² =
  14. 14.518² =
  15. 15.978² =
  16. 16.295² =
  17. 17.706² =
  18. 18.2556² =
  19. 19.974² =
  20. 20.251² =
  21. 21.386² =
  22. 22.726² =
  23. 23.602² =
  24. 24.6057² =
  25. 25.717² =
  26. 26.665² =
  27. 27.254² =
  28. 28.865² =
  29. 29.9504² =
  30. 30.809² =
  31. 31.414² =
  32. 32.777² =
  33. 33.166² =
  34. 34.179² =
  35. 35.766² =
  36. 36.980² =
  37. 37.381² =
  38. 38.692² =
  39. 39.855² =
  40. 40.721² =

Answer key

  1. 200704
  2. 6125625
  3. 7601049
  4. 24025
  5. 1555009
  6. 48399849
  7. 111556
  8. 168100
  9. 632025
  10. 15876
  11. 51529
  12. 214369
  13. 48776256
  14. 268324
  15. 956484
  16. 87025
  17. 498436
  18. 6533136
  19. 948676
  20. 63001
  21. 148996
  22. 527076
  23. 362404
  24. 36687249
  25. 514089
  26. 442225
  27. 64516
  28. 748225
  29. 90326016
  30. 654481
  31. 171396
  32. 603729
  33. 27556
  34. 32041
  35. 586756
  36. 960400
  37. 145161
  38. 478864
  39. 731025
  40. 519841

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