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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 259 · 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. 1.404² =
  2. 2.363² =
  3. 3.537² =
  4. 4.993² =
  5. 5.825² =
  6. 6.612² =
  7. 7.4189² =
  8. 8.9513² =
  9. 9.243² =
  10. 10.711² =
  11. 11.914² =
  12. 12.902² =
  13. 13.5646² =
  14. 14.396² =
  15. 15.544² =
  16. 16.581² =
  17. 17.757² =
  18. 18.442² =
  19. 19.974² =
  20. 20.566² =
  21. 21.5905² =
  22. 22.177² =
  23. 23.491² =
  24. 24.785² =
  25. 25.289² =
  26. 26.737² =
  27. 27.989² =
  28. 28.170² =
  29. 29.927² =
  30. 30.849² =
  31. 31.335² =
  32. 32.524² =
  33. 33.3844² =
  34. 34.602² =
  35. 35.988² =
  36. 36.7349² =
  37. 37.826² =
  38. 38.651² =
  39. 39.631² =
  40. 40.8072² =

Answer key

  1. 163216
  2. 131769
  3. 288369
  4. 986049
  5. 680625
  6. 374544
  7. 17547721
  8. 90497169
  9. 59049
  10. 505521
  11. 835396
  12. 813604
  13. 31877316
  14. 156816
  15. 295936
  16. 337561
  17. 573049
  18. 195364
  19. 948676
  20. 320356
  21. 34869025
  22. 31329
  23. 241081
  24. 616225
  25. 83521
  26. 543169
  27. 978121
  28. 28900
  29. 859329
  30. 720801
  31. 112225
  32. 274576
  33. 14776336
  34. 362404
  35. 976144
  36. 54007801
  37. 682276
  38. 423801
  39. 398161
  40. 65157184

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