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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 418 · 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. 1.620² =
  2. 2.865² =
  3. 3.211² =
  4. 4.3242² =
  5. 5.287² =
  6. 6.413² =
  7. 7.146² =
  8. 8.721² =
  9. 9.1279² =
  10. 10.192² =
  11. 11.106² =
  12. 12.536² =
  13. 13.2850² =
  14. 14.617² =
  15. 15.368² =
  16. 16.725² =
  17. 17.7038² =
  18. 18.473² =
  19. 19.309² =
  20. 20.966² =
  21. 21.263² =
  22. 22.2132² =
  23. 23.254² =
  24. 24.544² =
  25. 25.829² =
  26. 26.764² =
  27. 27.677² =
  28. 28.4084² =
  29. 29.6756² =
  30. 30.304² =
  31. 31.7986² =
  32. 32.741² =
  33. 33.800² =
  34. 34.530² =
  35. 35.119² =
  36. 36.697² =
  37. 37.291² =
  38. 38.780² =
  39. 39.889² =
  40. 40.101² =

Answer key

  1. 384400
  2. 748225
  3. 44521
  4. 10510564
  5. 82369
  6. 170569
  7. 21316
  8. 519841
  9. 1635841
  10. 36864
  11. 11236
  12. 287296
  13. 8122500
  14. 380689
  15. 135424
  16. 525625
  17. 49533444
  18. 223729
  19. 95481
  20. 933156
  21. 69169
  22. 4545424
  23. 64516
  24. 295936
  25. 687241
  26. 583696
  27. 458329
  28. 16679056
  29. 45643536
  30. 92416
  31. 63776196
  32. 549081
  33. 640000
  34. 280900
  35. 14161
  36. 485809
  37. 84681
  38. 608400
  39. 790321
  40. 10201

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