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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 351 · 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. 1.2022² =
  2. 2.445² =
  3. 3.881² =
  4. 4.448² =
  5. 5.790² =
  6. 6.3999² =
  7. 7.7043² =
  8. 8.433² =
  9. 9.2506² =
  10. 10.4599² =
  11. 11.523² =
  12. 12.935² =
  13. 13.2845² =
  14. 14.162² =
  15. 15.302² =
  16. 16.419² =
  17. 17.1672² =
  18. 18.9593² =
  19. 19.687² =
  20. 20.655² =
  21. 21.147² =
  22. 22.431² =
  23. 23.135² =
  24. 24.575² =
  25. 25.5014² =
  26. 26.250² =
  27. 27.637² =
  28. 28.4082² =
  29. 29.419² =
  30. 30.989² =
  31. 31.4309² =
  32. 32.9853² =
  33. 33.371² =
  34. 34.886² =
  35. 35.895² =
  36. 36.674² =
  37. 37.203² =
  38. 38.780² =
  39. 39.863² =
  40. 40.777² =

Answer key

  1. 4088484
  2. 198025
  3. 776161
  4. 200704
  5. 624100
  6. 15992001
  7. 49603849
  8. 187489
  9. 6280036
  10. 21150801
  11. 273529
  12. 874225
  13. 8094025
  14. 26244
  15. 91204
  16. 175561
  17. 2795584
  18. 92025649
  19. 471969
  20. 429025
  21. 21609
  22. 185761
  23. 18225
  24. 330625
  25. 25140196
  26. 62500
  27. 405769
  28. 16662724
  29. 175561
  30. 978121
  31. 18567481
  32. 97081609
  33. 137641
  34. 784996
  35. 801025
  36. 454276
  37. 41209
  38. 608400
  39. 744769
  40. 603729

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