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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 25 · 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. 1.515² =
  2. 2.8673² =
  3. 3.6589² =
  4. 4.181² =
  5. 5.681² =
  6. 6.338² =
  7. 7.217² =
  8. 8.545² =
  9. 9.2411² =
  10. 10.6532² =
  11. 11.170² =
  12. 12.989² =
  13. 13.505² =
  14. 14.3088² =
  15. 15.470² =
  16. 16.146² =
  17. 17.3519² =
  18. 18.956² =
  19. 19.436² =
  20. 20.428² =
  21. 21.959² =
  22. 22.654² =
  23. 23.149² =
  24. 24.319² =
  25. 25.575² =
  26. 26.955² =
  27. 27.754² =
  28. 28.9742² =
  29. 29.1729² =
  30. 30.810² =
  31. 31.653² =
  32. 32.170² =
  33. 33.552² =
  34. 34.4855² =
  35. 35.937² =
  36. 36.4257² =
  37. 37.8459² =
  38. 38.112² =
  39. 39.486² =
  40. 40.411² =

Answer key

  1. 265225
  2. 75220929
  3. 43414921
  4. 32761
  5. 463761
  6. 114244
  7. 47089
  8. 297025
  9. 5812921
  10. 42667024
  11. 28900
  12. 978121
  13. 255025
  14. 9535744
  15. 220900
  16. 21316
  17. 12383361
  18. 913936
  19. 190096
  20. 183184
  21. 919681
  22. 427716
  23. 22201
  24. 101761
  25. 330625
  26. 912025
  27. 568516
  28. 94906564
  29. 2989441
  30. 656100
  31. 426409
  32. 28900
  33. 304704
  34. 23571025
  35. 877969
  36. 18122049
  37. 71554681
  38. 12544
  39. 236196
  40. 168921

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