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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 801 · 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. 1.3307² =
  2. 2.943² =
  3. 3.4016² =
  4. 4.881² =
  5. 5.623² =
  6. 6.489² =
  7. 7.998² =
  8. 8.196² =
  9. 9.678² =
  10. 10.817² =
  11. 11.8208² =
  12. 12.391² =
  13. 13.752² =
  14. 14.525² =
  15. 15.493² =
  16. 16.667² =
  17. 17.415² =
  18. 18.4141² =
  19. 19.840² =
  20. 20.685² =
  21. 21.1187² =
  22. 22.5700² =
  23. 23.865² =
  24. 24.464² =
  25. 25.475² =
  26. 26.235² =
  27. 27.9158² =
  28. 28.829² =
  29. 29.177² =
  30. 30.862² =
  31. 31.657² =
  32. 32.118² =
  33. 33.865² =
  34. 34.990² =
  35. 35.958² =
  36. 36.769² =
  37. 37.849² =
  38. 38.300² =
  39. 39.5672² =
  40. 40.443² =

Answer key

  1. 10936249
  2. 889249
  3. 16128256
  4. 776161
  5. 388129
  6. 239121
  7. 996004
  8. 38416
  9. 459684
  10. 667489
  11. 67371264
  12. 152881
  13. 565504
  14. 275625
  15. 243049
  16. 444889
  17. 172225
  18. 17147881
  19. 705600
  20. 469225
  21. 1408969
  22. 32490000
  23. 748225
  24. 215296
  25. 225625
  26. 55225
  27. 83868964
  28. 687241
  29. 31329
  30. 743044
  31. 431649
  32. 13924
  33. 748225
  34. 980100
  35. 917764
  36. 591361
  37. 720801
  38. 90000
  39. 32171584
  40. 196249

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