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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 342 · 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. 1.327² =
  2. 2.282² =
  3. 3.359² =
  4. 4.568² =
  5. 5.302² =
  6. 6.266² =
  7. 7.790² =
  8. 8.707² =
  9. 9.5916² =
  10. 10.128² =
  11. 11.8854² =
  12. 12.8092² =
  13. 13.736² =
  14. 14.849² =
  15. 15.6847² =
  16. 16.349² =
  17. 17.476² =
  18. 18.6015² =
  19. 19.5619² =
  20. 20.746² =
  21. 21.336² =
  22. 22.904² =
  23. 23.519² =
  24. 24.193² =
  25. 25.690² =
  26. 26.745² =
  27. 27.457² =
  28. 28.857² =
  29. 29.199² =
  30. 30.6847² =
  31. 31.963² =
  32. 32.520² =
  33. 33.660² =
  34. 34.700² =
  35. 35.3528² =
  36. 36.413² =
  37. 37.360² =
  38. 38.453² =
  39. 39.7324² =
  40. 40.7050² =

Answer key

  1. 106929
  2. 79524
  3. 128881
  4. 322624
  5. 91204
  6. 70756
  7. 624100
  8. 499849
  9. 34999056
  10. 16384
  11. 78393316
  12. 65480464
  13. 541696
  14. 720801
  15. 46881409
  16. 121801
  17. 226576
  18. 36180225
  19. 31573161
  20. 556516
  21. 112896
  22. 817216
  23. 269361
  24. 37249
  25. 476100
  26. 555025
  27. 208849
  28. 734449
  29. 39601
  30. 46881409
  31. 927369
  32. 270400
  33. 435600
  34. 490000
  35. 12446784
  36. 170569
  37. 129600
  38. 205209
  39. 53640976
  40. 49702500

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