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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 441 · 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. 1.626² =
  2. 2.885² =
  3. 3.8933² =
  4. 4.642² =
  5. 5.623² =
  6. 6.3587² =
  7. 7.621² =
  8. 8.9785² =
  9. 9.2308² =
  10. 10.843² =
  11. 11.243² =
  12. 12.2947² =
  13. 13.628² =
  14. 14.7673² =
  15. 15.973² =
  16. 16.4470² =
  17. 17.833² =
  18. 18.224² =
  19. 19.8165² =
  20. 20.295² =
  21. 21.3276² =
  22. 22.997² =
  23. 23.633² =
  24. 24.689² =
  25. 25.968² =
  26. 26.576² =
  27. 27.775² =
  28. 28.202² =
  29. 29.313² =
  30. 30.265² =
  31. 31.219² =
  32. 32.947² =
  33. 33.820² =
  34. 34.146² =
  35. 35.923² =
  36. 36.502² =
  37. 37.164² =
  38. 38.304² =
  39. 39.2800² =
  40. 40.7101² =

Answer key

  1. 391876
  2. 783225
  3. 79798489
  4. 412164
  5. 388129
  6. 12866569
  7. 385641
  8. 95746225
  9. 5326864
  10. 710649
  11. 59049
  12. 8684809
  13. 394384
  14. 58874929
  15. 946729
  16. 19980900
  17. 693889
  18. 50176
  19. 66667225
  20. 87025
  21. 10732176
  22. 994009
  23. 400689
  24. 474721
  25. 937024
  26. 331776
  27. 600625
  28. 40804
  29. 97969
  30. 70225
  31. 47961
  32. 896809
  33. 672400
  34. 21316
  35. 851929
  36. 252004
  37. 26896
  38. 92416
  39. 7840000
  40. 50424201

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