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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 315 · 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. 1.524² =
  2. 2.694² =
  3. 3.634² =
  4. 4.979² =
  5. 5.333² =
  6. 6.147² =
  7. 7.9720² =
  8. 8.579² =
  9. 9.531² =
  10. 10.6434² =
  11. 11.6479² =
  12. 12.544² =
  13. 13.725² =
  14. 14.968² =
  15. 15.3049² =
  16. 16.444² =
  17. 17.572² =
  18. 18.941² =
  19. 19.5404² =
  20. 20.997² =
  21. 21.402² =
  22. 22.682² =
  23. 23.2330² =
  24. 24.158² =
  25. 25.4477² =
  26. 26.293² =
  27. 27.216² =
  28. 28.6557² =
  29. 29.511² =
  30. 30.3623² =
  31. 31.407² =
  32. 32.278² =
  33. 33.9957² =
  34. 34.461² =
  35. 35.737² =
  36. 36.721² =
  37. 37.870² =
  38. 38.473² =
  39. 39.334² =
  40. 40.360² =

Answer key

  1. 274576
  2. 481636
  3. 401956
  4. 958441
  5. 110889
  6. 21609
  7. 94478400
  8. 335241
  9. 281961
  10. 41396356
  11. 41977441
  12. 295936
  13. 525625
  14. 937024
  15. 9296401
  16. 197136
  17. 327184
  18. 885481
  19. 29203216
  20. 994009
  21. 161604
  22. 465124
  23. 5428900
  24. 24964
  25. 20043529
  26. 85849
  27. 46656
  28. 42994249
  29. 261121
  30. 13126129
  31. 165649
  32. 77284
  33. 99141849
  34. 212521
  35. 543169
  36. 519841
  37. 756900
  38. 223729
  39. 111556
  40. 129600

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