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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 930 · 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. 1.249² =
  2. 2.489² =
  3. 3.243² =
  4. 4.3028² =
  5. 5.983² =
  6. 6.365² =
  7. 7.208² =
  8. 8.310² =
  9. 9.177² =
  10. 10.174² =
  11. 11.882² =
  12. 12.571² =
  13. 13.748² =
  14. 14.414² =
  15. 15.544² =
  16. 16.327² =
  17. 17.4988² =
  18. 18.8498² =
  19. 19.444² =
  20. 20.1427² =
  21. 21.599² =
  22. 22.418² =
  23. 23.5632² =
  24. 24.9682² =
  25. 25.508² =
  26. 26.448² =
  27. 27.757² =
  28. 28.6302² =
  29. 29.3066² =
  30. 30.179² =
  31. 31.374² =
  32. 32.232² =
  33. 33.341² =
  34. 34.831² =
  35. 35.6093² =
  36. 36.7501² =
  37. 37.385² =
  38. 38.920² =
  39. 39.277² =
  40. 40.1135² =

Answer key

  1. 62001
  2. 239121
  3. 59049
  4. 9168784
  5. 966289
  6. 133225
  7. 43264
  8. 96100
  9. 31329
  10. 30276
  11. 777924
  12. 326041
  13. 559504
  14. 171396
  15. 295936
  16. 106929
  17. 24880144
  18. 72216004
  19. 197136
  20. 2036329
  21. 358801
  22. 174724
  23. 31719424
  24. 93741124
  25. 258064
  26. 200704
  27. 573049
  28. 39715204
  29. 9400356
  30. 32041
  31. 139876
  32. 53824
  33. 116281
  34. 690561
  35. 37124649
  36. 56265001
  37. 148225
  38. 846400
  39. 76729
  40. 1288225

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