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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 481 · 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. 1.304² =
  2. 2.214² =
  3. 3.190² =
  4. 4.8674² =
  5. 5.775² =
  6. 6.344² =
  7. 7.7719² =
  8. 8.634² =
  9. 9.141² =
  10. 10.1817² =
  11. 11.154² =
  12. 12.435² =
  13. 13.659² =
  14. 14.797² =
  15. 15.439² =
  16. 16.3267² =
  17. 17.922² =
  18. 18.6908² =
  19. 19.494² =
  20. 20.678² =
  21. 21.434² =
  22. 22.6424² =
  23. 23.793² =
  24. 24.714² =
  25. 25.319² =
  26. 26.640² =
  27. 27.3030² =
  28. 28.886² =
  29. 29.155² =
  30. 30.5588² =
  31. 31.577² =
  32. 32.1650² =
  33. 33.450² =
  34. 34.170² =
  35. 35.117² =
  36. 36.935² =
  37. 37.400² =
  38. 38.8719² =
  39. 39.251² =
  40. 40.7614² =

Answer key

  1. 92416
  2. 45796
  3. 36100
  4. 75238276
  5. 600625
  6. 118336
  7. 59582961
  8. 401956
  9. 19881
  10. 3301489
  11. 23716
  12. 189225
  13. 434281
  14. 635209
  15. 192721
  16. 10673289
  17. 850084
  18. 47720464
  19. 244036
  20. 459684
  21. 188356
  22. 41267776
  23. 628849
  24. 509796
  25. 101761
  26. 409600
  27. 9180900
  28. 784996
  29. 24025
  30. 31225744
  31. 332929
  32. 2722500
  33. 202500
  34. 28900
  35. 13689
  36. 874225
  37. 160000
  38. 76020961
  39. 63001
  40. 57972996

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