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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 825 · 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. 1.2196² =
  2. 2.909² =
  3. 3.651² =
  4. 4.248² =
  5. 5.513² =
  6. 6.555² =
  7. 7.1109² =
  8. 8.400² =
  9. 9.234² =
  10. 10.682² =
  11. 11.846² =
  12. 12.602² =
  13. 13.110² =
  14. 14.499² =
  15. 15.563² =
  16. 16.193² =
  17. 17.5390² =
  18. 18.1637² =
  19. 19.116² =
  20. 20.383² =
  21. 21.3480² =
  22. 22.1811² =
  23. 23.132² =
  24. 24.911² =
  25. 25.1320² =
  26. 26.293² =
  27. 27.8604² =
  28. 28.314² =
  29. 29.109² =
  30. 30.2831² =
  31. 31.393² =
  32. 32.2025² =
  33. 33.980² =
  34. 34.272² =
  35. 35.580² =
  36. 36.1135² =
  37. 37.861² =
  38. 38.9313² =
  39. 39.2874² =
  40. 40.323² =

Answer key

  1. 4822416
  2. 826281
  3. 423801
  4. 61504
  5. 263169
  6. 308025
  7. 1229881
  8. 160000
  9. 54756
  10. 465124
  11. 715716
  12. 362404
  13. 12100
  14. 249001
  15. 316969
  16. 37249
  17. 29052100
  18. 2679769
  19. 13456
  20. 146689
  21. 12110400
  22. 3279721
  23. 17424
  24. 829921
  25. 1742400
  26. 85849
  27. 74028816
  28. 98596
  29. 11881
  30. 8014561
  31. 154449
  32. 4100625
  33. 960400
  34. 73984
  35. 336400
  36. 1288225
  37. 741321
  38. 86731969
  39. 8259876
  40. 104329

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