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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 535 · 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. 1.2401² =
  2. 2.872² =
  3. 3.217² =
  4. 4.658² =
  5. 5.316² =
  6. 6.851² =
  7. 7.639² =
  8. 8.391² =
  9. 9.271² =
  10. 10.558² =
  11. 11.5678² =
  12. 12.387² =
  13. 13.691² =
  14. 14.1411² =
  15. 15.9487² =
  16. 16.9986² =
  17. 17.901² =
  18. 18.1289² =
  19. 19.1416² =
  20. 20.284² =
  21. 21.303² =
  22. 22.9910² =
  23. 23.352² =
  24. 24.469² =
  25. 25.201² =
  26. 26.321² =
  27. 27.132² =
  28. 28.646² =
  29. 29.450² =
  30. 30.221² =
  31. 31.726² =
  32. 32.3280² =
  33. 33.877² =
  34. 34.534² =
  35. 35.126² =
  36. 36.620² =
  37. 37.789² =
  38. 38.399² =
  39. 39.771² =
  40. 40.5275² =

Answer key

  1. 5764801
  2. 760384
  3. 47089
  4. 432964
  5. 99856
  6. 724201
  7. 408321
  8. 152881
  9. 73441
  10. 311364
  11. 32239684
  12. 149769
  13. 477481
  14. 1990921
  15. 90003169
  16. 99720196
  17. 811801
  18. 1661521
  19. 2005056
  20. 80656
  21. 91809
  22. 98208100
  23. 123904
  24. 219961
  25. 40401
  26. 103041
  27. 17424
  28. 417316
  29. 202500
  30. 48841
  31. 527076
  32. 10758400
  33. 769129
  34. 285156
  35. 15876
  36. 384400
  37. 622521
  38. 159201
  39. 594441
  40. 27825625

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