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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 889 · 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. 1.263² =
  2. 2.801² =
  3. 3.6731² =
  4. 4.229² =
  5. 5.7701² =
  6. 6.601² =
  7. 7.116² =
  8. 8.912² =
  9. 9.5470² =
  10. 10.2361² =
  11. 11.7988² =
  12. 12.442² =
  13. 13.8388² =
  14. 14.885² =
  15. 15.5713² =
  16. 16.7987² =
  17. 17.644² =
  18. 18.114² =
  19. 19.201² =
  20. 20.4036² =
  21. 21.4540² =
  22. 22.4604² =
  23. 23.252² =
  24. 24.7921² =
  25. 25.409² =
  26. 26.815² =
  27. 27.271² =
  28. 28.174² =
  29. 29.461² =
  30. 30.589² =
  31. 31.4122² =
  32. 32.929² =
  33. 33.7451² =
  34. 34.103² =
  35. 35.301² =
  36. 36.347² =
  37. 37.1112² =
  38. 38.707² =
  39. 39.919² =
  40. 40.244² =

Answer key

  1. 69169
  2. 641601
  3. 45306361
  4. 52441
  5. 59305401
  6. 361201
  7. 13456
  8. 831744
  9. 29920900
  10. 5574321
  11. 63808144
  12. 195364
  13. 70358544
  14. 783225
  15. 32638369
  16. 63792169
  17. 414736
  18. 12996
  19. 40401
  20. 16289296
  21. 20611600
  22. 21196816
  23. 63504
  24. 62742241
  25. 167281
  26. 664225
  27. 73441
  28. 30276
  29. 212521
  30. 346921
  31. 16990884
  32. 863041
  33. 55517401
  34. 10609
  35. 90601
  36. 120409
  37. 1236544
  38. 499849
  39. 844561
  40. 59536

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