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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 645 · 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. 1.6011² =
  2. 2.920² =
  3. 3.210² =
  4. 4.980² =
  5. 5.245² =
  6. 6.953² =
  7. 7.500² =
  8. 8.1073² =
  9. 9.462² =
  10. 10.2338² =
  11. 11.121² =
  12. 12.251² =
  13. 13.209² =
  14. 14.203² =
  15. 15.805² =
  16. 16.129² =
  17. 17.643² =
  18. 18.3747² =
  19. 19.2861² =
  20. 20.2407² =
  21. 21.869² =
  22. 22.240² =
  23. 23.395² =
  24. 24.367² =
  25. 25.872² =
  26. 26.4966² =
  27. 27.1882² =
  28. 28.481² =
  29. 29.267² =
  30. 30.3873² =
  31. 31.5787² =
  32. 32.580² =
  33. 33.6986² =
  34. 34.932² =
  35. 35.7428² =
  36. 36.896² =
  37. 37.1635² =
  38. 38.8432² =
  39. 39.828² =
  40. 40.280² =

Answer key

  1. 36132121
  2. 846400
  3. 44100
  4. 960400
  5. 60025
  6. 908209
  7. 250000
  8. 1151329
  9. 213444
  10. 5466244
  11. 14641
  12. 63001
  13. 43681
  14. 41209
  15. 648025
  16. 16641
  17. 413449
  18. 14040009
  19. 8185321
  20. 5793649
  21. 755161
  22. 57600
  23. 156025
  24. 134689
  25. 760384
  26. 24661156
  27. 3541924
  28. 231361
  29. 71289
  30. 15000129
  31. 33489369
  32. 336400
  33. 48804196
  34. 868624
  35. 55175184
  36. 802816
  37. 2673225
  38. 71098624
  39. 685584
  40. 78400

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