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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 263 · 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. 1.215² =
  2. 2.8832² =
  3. 3.171² =
  4. 4.375² =
  5. 5.2821² =
  6. 6.702² =
  7. 7.648² =
  8. 8.3580² =
  9. 9.878² =
  10. 10.7008² =
  11. 11.1384² =
  12. 12.253² =
  13. 13.877² =
  14. 14.461² =
  15. 15.248² =
  16. 16.791² =
  17. 17.244² =
  18. 18.659² =
  19. 19.650² =
  20. 20.2956² =
  21. 21.384² =
  22. 22.515² =
  23. 23.139² =
  24. 24.242² =
  25. 25.886² =
  26. 26.514² =
  27. 27.199² =
  28. 28.496² =
  29. 29.575² =
  30. 30.6844² =
  31. 31.250² =
  32. 32.178² =
  33. 33.6967² =
  34. 34.7988² =
  35. 35.2710² =
  36. 36.592² =
  37. 37.597² =
  38. 38.5412² =
  39. 39.307² =
  40. 40.336² =

Answer key

  1. 46225
  2. 78004224
  3. 29241
  4. 140625
  5. 7958041
  6. 492804
  7. 419904
  8. 12816400
  9. 770884
  10. 49112064
  11. 1915456
  12. 64009
  13. 769129
  14. 212521
  15. 61504
  16. 625681
  17. 59536
  18. 434281
  19. 422500
  20. 8737936
  21. 147456
  22. 265225
  23. 19321
  24. 58564
  25. 784996
  26. 264196
  27. 39601
  28. 246016
  29. 330625
  30. 46840336
  31. 62500
  32. 31684
  33. 48539089
  34. 63808144
  35. 7344100
  36. 350464
  37. 356409
  38. 29289744
  39. 94249
  40. 112896

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