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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 247 · 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. 1.360² =
  2. 2.229² =
  3. 3.818² =
  4. 4.510² =
  5. 5.2796² =
  6. 6.1844² =
  7. 7.825² =
  8. 8.9696² =
  9. 9.523² =
  10. 10.782² =
  11. 11.1573² =
  12. 12.911² =
  13. 13.155² =
  14. 14.691² =
  15. 15.941² =
  16. 16.150² =
  17. 17.3309² =
  18. 18.852² =
  19. 19.4261² =
  20. 20.312² =
  21. 21.378² =
  22. 22.9110² =
  23. 23.194² =
  24. 24.434² =
  25. 25.6048² =
  26. 26.753² =
  27. 27.945² =
  28. 28.977² =
  29. 29.121² =
  30. 30.291² =
  31. 31.893² =
  32. 32.561² =
  33. 33.610² =
  34. 34.8716² =
  35. 35.7425² =
  36. 36.494² =
  37. 37.424² =
  38. 38.342² =
  39. 39.158² =
  40. 40.3611² =

Answer key

  1. 129600
  2. 52441
  3. 669124
  4. 260100
  5. 7817616
  6. 3400336
  7. 680625
  8. 94012416
  9. 273529
  10. 611524
  11. 2474329
  12. 829921
  13. 24025
  14. 477481
  15. 885481
  16. 22500
  17. 10949481
  18. 725904
  19. 18156121
  20. 97344
  21. 142884
  22. 82992100
  23. 37636
  24. 188356
  25. 36578304
  26. 567009
  27. 893025
  28. 954529
  29. 14641
  30. 84681
  31. 797449
  32. 314721
  33. 372100
  34. 75968656
  35. 55130625
  36. 244036
  37. 179776
  38. 116964
  39. 24964
  40. 13039321

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