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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 621 · 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. 1.369² =
  2. 2.547² =
  3. 3.2650² =
  4. 4.261² =
  5. 5.313² =
  6. 6.5680² =
  7. 7.874² =
  8. 8.217² =
  9. 9.1945² =
  10. 10.933² =
  11. 11.140² =
  12. 12.289² =
  13. 13.744² =
  14. 14.5386² =
  15. 15.137² =
  16. 16.387² =
  17. 17.6952² =
  18. 18.6245² =
  19. 19.5466² =
  20. 20.230² =
  21. 21.3473² =
  22. 22.620² =
  23. 23.158² =
  24. 24.1979² =
  25. 25.886² =
  26. 26.4095² =
  27. 27.1513² =
  28. 28.936² =
  29. 29.897² =
  30. 30.780² =
  31. 31.339² =
  32. 32.457² =
  33. 33.498² =
  34. 34.481² =
  35. 35.714² =
  36. 36.104² =
  37. 37.872² =
  38. 38.7713² =
  39. 39.931² =
  40. 40.4478² =

Answer key

  1. 136161
  2. 299209
  3. 7022500
  4. 68121
  5. 97969
  6. 32262400
  7. 763876
  8. 47089
  9. 3783025
  10. 870489
  11. 19600
  12. 83521
  13. 553536
  14. 29008996
  15. 18769
  16. 149769
  17. 48330304
  18. 39000025
  19. 29877156
  20. 52900
  21. 12061729
  22. 384400
  23. 24964
  24. 3916441
  25. 784996
  26. 16769025
  27. 2289169
  28. 876096
  29. 804609
  30. 608400
  31. 114921
  32. 208849
  33. 248004
  34. 231361
  35. 509796
  36. 10816
  37. 760384
  38. 59490369
  39. 866761
  40. 20052484

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