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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 269 · 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. 1.810² =
  2. 2.249² =
  3. 3.469² =
  4. 4.9863² =
  5. 5.7743² =
  6. 6.939² =
  7. 7.5055² =
  8. 8.2093² =
  9. 9.8904² =
  10. 10.855² =
  11. 11.6622² =
  12. 12.716² =
  13. 13.724² =
  14. 14.7937² =
  15. 15.888² =
  16. 16.5147² =
  17. 17.6424² =
  18. 18.681² =
  19. 19.6450² =
  20. 20.177² =
  21. 21.716² =
  22. 22.103² =
  23. 23.268² =
  24. 24.5363² =
  25. 25.164² =
  26. 26.662² =
  27. 27.5154² =
  28. 28.1482² =
  29. 29.191² =
  30. 30.2941² =
  31. 31.241² =
  32. 32.238² =
  33. 33.553² =
  34. 34.861² =
  35. 35.839² =
  36. 36.389² =
  37. 37.127² =
  38. 38.579² =
  39. 39.144² =
  40. 40.170² =

Answer key

  1. 656100
  2. 62001
  3. 219961
  4. 97278769
  5. 59954049
  6. 881721
  7. 25553025
  8. 4380649
  9. 79281216
  10. 731025
  11. 43850884
  12. 512656
  13. 524176
  14. 62995969
  15. 788544
  16. 26491609
  17. 41267776
  18. 463761
  19. 41602500
  20. 31329
  21. 512656
  22. 10609
  23. 71824
  24. 28761769
  25. 26896
  26. 438244
  27. 26563716
  28. 2196324
  29. 36481
  30. 8649481
  31. 58081
  32. 56644
  33. 305809
  34. 741321
  35. 703921
  36. 151321
  37. 16129
  38. 335241
  39. 20736
  40. 28900

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