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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 568 · 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. 1.367² =
  2. 2.7561² =
  3. 3.137² =
  4. 4.9609² =
  5. 5.851² =
  6. 6.308² =
  7. 7.4370² =
  8. 8.238² =
  9. 9.7120² =
  10. 10.7124² =
  11. 11.657² =
  12. 12.196² =
  13. 13.248² =
  14. 14.990² =
  15. 15.7799² =
  16. 16.917² =
  17. 17.823² =
  18. 18.560² =
  19. 19.3446² =
  20. 20.970² =
  21. 21.574² =
  22. 22.148² =
  23. 23.816² =
  24. 24.831² =
  25. 25.583² =
  26. 26.592² =
  27. 27.295² =
  28. 28.246² =
  29. 29.312² =
  30. 30.842² =
  31. 31.621² =
  32. 32.174² =
  33. 33.953² =
  34. 34.4453² =
  35. 35.5748² =
  36. 36.5592² =
  37. 37.888² =
  38. 38.7830² =
  39. 39.1345² =
  40. 40.127² =

Answer key

  1. 134689
  2. 57168721
  3. 18769
  4. 92332881
  5. 724201
  6. 94864
  7. 19096900
  8. 56644
  9. 50694400
  10. 50751376
  11. 431649
  12. 38416
  13. 61504
  14. 980100
  15. 60824401
  16. 840889
  17. 677329
  18. 313600
  19. 11874916
  20. 940900
  21. 329476
  22. 21904
  23. 665856
  24. 690561
  25. 339889
  26. 350464
  27. 87025
  28. 60516
  29. 97344
  30. 708964
  31. 385641
  32. 30276
  33. 908209
  34. 19829209
  35. 33039504
  36. 31270464
  37. 788544
  38. 61308900
  39. 1809025
  40. 16129

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