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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 486 · 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. 1.863² =
  2. 2.602² =
  3. 3.670² =
  4. 4.1814² =
  5. 5.366² =
  6. 6.261² =
  7. 7.438² =
  8. 8.346² =
  9. 9.162² =
  10. 10.412² =
  11. 11.658² =
  12. 12.212² =
  13. 13.7473² =
  14. 14.420² =
  15. 15.515² =
  16. 16.532² =
  17. 17.670² =
  18. 18.755² =
  19. 19.518² =
  20. 20.366² =
  21. 21.112² =
  22. 22.753² =
  23. 23.514² =
  24. 24.308² =
  25. 25.5222² =
  26. 26.946² =
  27. 27.327² =
  28. 28.4057² =
  29. 29.924² =
  30. 30.8211² =
  31. 31.183² =
  32. 32.757² =
  33. 33.344² =
  34. 34.3141² =
  35. 35.133² =
  36. 36.463² =
  37. 37.760² =
  38. 38.780² =
  39. 39.5169² =
  40. 40.8118² =

Answer key

  1. 744769
  2. 362404
  3. 448900
  4. 3290596
  5. 133956
  6. 68121
  7. 191844
  8. 119716
  9. 26244
  10. 169744
  11. 432964
  12. 44944
  13. 55845729
  14. 176400
  15. 265225
  16. 283024
  17. 448900
  18. 570025
  19. 268324
  20. 133956
  21. 12544
  22. 567009
  23. 264196
  24. 94864
  25. 27269284
  26. 894916
  27. 106929
  28. 16459249
  29. 853776
  30. 67420521
  31. 33489
  32. 573049
  33. 118336
  34. 9865881
  35. 17689
  36. 214369
  37. 577600
  38. 608400
  39. 26718561
  40. 65901924

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