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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 396 · 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. 1.198² =
  2. 2.9979² =
  3. 3.757² =
  4. 4.711² =
  5. 5.8393² =
  6. 6.588² =
  7. 7.1717² =
  8. 8.897² =
  9. 9.950² =
  10. 10.258² =
  11. 11.621² =
  12. 12.5257² =
  13. 13.7616² =
  14. 14.883² =
  15. 15.1647² =
  16. 16.335² =
  17. 17.569² =
  18. 18.8746² =
  19. 19.4579² =
  20. 20.912² =
  21. 21.755² =
  22. 22.572² =
  23. 23.670² =
  24. 24.6753² =
  25. 25.103² =
  26. 26.674² =
  27. 27.587² =
  28. 28.228² =
  29. 29.675² =
  30. 30.705² =
  31. 31.708² =
  32. 32.184² =
  33. 33.174² =
  34. 34.848² =
  35. 35.166² =
  36. 36.719² =
  37. 37.619² =
  38. 38.185² =
  39. 39.7203² =
  40. 40.727² =

Answer key

  1. 39204
  2. 99580441
  3. 573049
  4. 505521
  5. 70442449
  6. 345744
  7. 2948089
  8. 804609
  9. 902500
  10. 66564
  11. 385641
  12. 27636049
  13. 58003456
  14. 779689
  15. 2712609
  16. 112225
  17. 323761
  18. 76492516
  19. 20967241
  20. 831744
  21. 570025
  22. 327184
  23. 448900
  24. 45603009
  25. 10609
  26. 454276
  27. 344569
  28. 51984
  29. 455625
  30. 497025
  31. 501264
  32. 33856
  33. 30276
  34. 719104
  35. 27556
  36. 516961
  37. 383161
  38. 34225
  39. 51883209
  40. 528529

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