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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 823 · 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. 1.465² =
  2. 2.148² =
  3. 3.880² =
  4. 4.643² =
  5. 5.289² =
  6. 6.946² =
  7. 7.8544² =
  8. 8.454² =
  9. 9.4867² =
  10. 10.705² =
  11. 11.166² =
  12. 12.583² =
  13. 13.323² =
  14. 14.248² =
  15. 15.741² =
  16. 16.553² =
  17. 17.1142² =
  18. 18.208² =
  19. 19.5750² =
  20. 20.828² =
  21. 21.9274² =
  22. 22.7090² =
  23. 23.6362² =
  24. 24.174² =
  25. 25.124² =
  26. 26.4138² =
  27. 27.612² =
  28. 28.748² =
  29. 29.309² =
  30. 30.846² =
  31. 31.759² =
  32. 32.579² =
  33. 33.685² =
  34. 34.295² =
  35. 35.562² =
  36. 36.222² =
  37. 37.672² =
  38. 38.708² =
  39. 39.908² =
  40. 40.714² =

Answer key

  1. 216225
  2. 21904
  3. 774400
  4. 413449
  5. 83521
  6. 894916
  7. 72999936
  8. 206116
  9. 23687689
  10. 497025
  11. 27556
  12. 339889
  13. 104329
  14. 61504
  15. 549081
  16. 305809
  17. 1304164
  18. 43264
  19. 33062500
  20. 685584
  21. 86007076
  22. 50268100
  23. 40475044
  24. 30276
  25. 15376
  26. 17123044
  27. 374544
  28. 559504
  29. 95481
  30. 715716
  31. 576081
  32. 335241
  33. 469225
  34. 87025
  35. 315844
  36. 49284
  37. 451584
  38. 501264
  39. 824464
  40. 509796

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