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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 944 · 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. 1.140² =
  2. 2.701² =
  3. 3.106² =
  4. 4.107² =
  5. 5.3000² =
  6. 6.6297² =
  7. 7.224² =
  8. 8.544² =
  9. 9.146² =
  10. 10.365² =
  11. 11.720² =
  12. 12.1508² =
  13. 13.220² =
  14. 14.794² =
  15. 15.168² =
  16. 16.336² =
  17. 17.529² =
  18. 18.4772² =
  19. 19.970² =
  20. 20.105² =
  21. 21.107² =
  22. 22.650² =
  23. 23.604² =
  24. 24.2785² =
  25. 25.837² =
  26. 26.6263² =
  27. 27.282² =
  28. 28.682² =
  29. 29.1490² =
  30. 30.163² =
  31. 31.986² =
  32. 32.6147² =
  33. 33.9027² =
  34. 34.8449² =
  35. 35.368² =
  36. 36.9630² =
  37. 37.699² =
  38. 38.1362² =
  39. 39.966² =
  40. 40.153² =

Answer key

  1. 19600
  2. 491401
  3. 11236
  4. 11449
  5. 9000000
  6. 39652209
  7. 50176
  8. 295936
  9. 21316
  10. 133225
  11. 518400
  12. 2274064
  13. 48400
  14. 630436
  15. 28224
  16. 112896
  17. 279841
  18. 22771984
  19. 940900
  20. 11025
  21. 11449
  22. 422500
  23. 364816
  24. 7756225
  25. 700569
  26. 39225169
  27. 79524
  28. 465124
  29. 2220100
  30. 26569
  31. 972196
  32. 37785609
  33. 81486729
  34. 71385601
  35. 135424
  36. 92736900
  37. 488601
  38. 1855044
  39. 933156
  40. 23409

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