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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 697 · 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. 1.2294² =
  2. 2.5719² =
  3. 3.3978² =
  4. 4.2051² =
  5. 5.805² =
  6. 6.941² =
  7. 7.484² =
  8. 8.690² =
  9. 9.537² =
  10. 10.671² =
  11. 11.625² =
  12. 12.361² =
  13. 13.8694² =
  14. 14.4839² =
  15. 15.3230² =
  16. 16.234² =
  17. 17.832² =
  18. 18.210² =
  19. 19.218² =
  20. 20.669² =
  21. 21.481² =
  22. 22.6661² =
  23. 23.804² =
  24. 24.743² =
  25. 25.6192² =
  26. 26.7329² =
  27. 27.996² =
  28. 28.386² =
  29. 29.989² =
  30. 30.398² =
  31. 31.3704² =
  32. 32.156² =
  33. 33.323² =
  34. 34.572² =
  35. 35.187² =
  36. 36.379² =
  37. 37.913² =
  38. 38.734² =
  39. 39.781² =
  40. 40.8408² =

Answer key

  1. 5262436
  2. 32706961
  3. 15824484
  4. 4206601
  5. 648025
  6. 885481
  7. 234256
  8. 476100
  9. 288369
  10. 450241
  11. 390625
  12. 130321
  13. 75585636
  14. 23415921
  15. 10432900
  16. 54756
  17. 692224
  18. 44100
  19. 47524
  20. 447561
  21. 231361
  22. 44368921
  23. 646416
  24. 552049
  25. 38340864
  26. 53714241
  27. 992016
  28. 148996
  29. 978121
  30. 158404
  31. 13719616
  32. 24336
  33. 104329
  34. 327184
  35. 34969
  36. 143641
  37. 833569
  38. 538756
  39. 609961
  40. 70694464

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