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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 43 · 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. 1.819² =
  2. 2.437² =
  3. 3.708² =
  4. 4.130² =
  5. 5.1274² =
  6. 6.342² =
  7. 7.524² =
  8. 8.9329² =
  9. 9.143² =
  10. 10.652² =
  11. 11.2383² =
  12. 12.7431² =
  13. 13.196² =
  14. 14.929² =
  15. 15.756² =
  16. 16.197² =
  17. 17.335² =
  18. 18.1590² =
  19. 19.968² =
  20. 20.290² =
  21. 21.151² =
  22. 22.505² =
  23. 23.169² =
  24. 24.136² =
  25. 25.102² =
  26. 26.9443² =
  27. 27.5346² =
  28. 28.2746² =
  29. 29.736² =
  30. 30.515² =
  31. 31.423² =
  32. 32.723² =
  33. 33.603² =
  34. 34.465² =
  35. 35.514² =
  36. 36.5441² =
  37. 37.4322² =
  38. 38.735² =
  39. 39.335² =
  40. 40.591² =

Answer key

  1. 670761
  2. 190969
  3. 501264
  4. 16900
  5. 1623076
  6. 116964
  7. 274576
  8. 87030241
  9. 20449
  10. 425104
  11. 5678689
  12. 55219761
  13. 38416
  14. 863041
  15. 571536
  16. 38809
  17. 112225
  18. 2528100
  19. 937024
  20. 84100
  21. 22801
  22. 255025
  23. 28561
  24. 18496
  25. 10404
  26. 89170249
  27. 28579716
  28. 7540516
  29. 541696
  30. 265225
  31. 178929
  32. 522729
  33. 363609
  34. 216225
  35. 264196
  36. 29604481
  37. 18679684
  38. 540225
  39. 112225
  40. 349281

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