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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 943 · 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. 1.1035² =
  2. 2.345² =
  3. 3.8820² =
  4. 4.227² =
  5. 5.5479² =
  6. 6.444² =
  7. 7.142² =
  8. 8.842² =
  9. 9.494² =
  10. 10.160² =
  11. 11.4723² =
  12. 12.926² =
  13. 13.3500² =
  14. 14.816² =
  15. 15.360² =
  16. 16.5270² =
  17. 17.840² =
  18. 18.858² =
  19. 19.8444² =
  20. 20.444² =
  21. 21.468² =
  22. 22.537² =
  23. 23.115² =
  24. 24.293² =
  25. 25.304² =
  26. 26.340² =
  27. 27.9555² =
  28. 28.6379² =
  29. 29.272² =
  30. 30.248² =
  31. 31.9958² =
  32. 32.458² =
  33. 33.802² =
  34. 34.7905² =
  35. 35.588² =
  36. 36.465² =
  37. 37.739² =
  38. 38.8534² =
  39. 39.915² =
  40. 40.374² =

Answer key

  1. 1071225
  2. 119025
  3. 77792400
  4. 51529
  5. 30019441
  6. 197136
  7. 20164
  8. 708964
  9. 244036
  10. 25600
  11. 22306729
  12. 857476
  13. 12250000
  14. 665856
  15. 129600
  16. 27772900
  17. 705600
  18. 736164
  19. 71301136
  20. 197136
  21. 219024
  22. 288369
  23. 13225
  24. 85849
  25. 92416
  26. 115600
  27. 91298025
  28. 40691641
  29. 73984
  30. 61504
  31. 99161764
  32. 209764
  33. 643204
  34. 62489025
  35. 345744
  36. 216225
  37. 546121
  38. 72829156
  39. 837225
  40. 139876

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