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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 931 · 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. 1.263² =
  2. 2.550² =
  3. 3.794² =
  4. 4.280² =
  5. 5.9693² =
  6. 6.181² =
  7. 7.5576² =
  8. 8.288² =
  9. 9.687² =
  10. 10.108² =
  11. 11.968² =
  12. 12.6881² =
  13. 13.3542² =
  14. 14.597² =
  15. 15.8008² =
  16. 16.574² =
  17. 17.654² =
  18. 18.231² =
  19. 19.785² =
  20. 20.5354² =
  21. 21.454² =
  22. 22.2835² =
  23. 23.182² =
  24. 24.693² =
  25. 25.208² =
  26. 26.3207² =
  27. 27.4248² =
  28. 28.532² =
  29. 29.373² =
  30. 30.989² =
  31. 31.3184² =
  32. 32.2494² =
  33. 33.5559² =
  34. 34.5042² =
  35. 35.993² =
  36. 36.127² =
  37. 37.386² =
  38. 38.284² =
  39. 39.130² =
  40. 40.6217² =

Answer key

  1. 69169
  2. 302500
  3. 630436
  4. 78400
  5. 93954249
  6. 32761
  7. 31091776
  8. 82944
  9. 471969
  10. 11664
  11. 937024
  12. 47348161
  13. 12545764
  14. 356409
  15. 64128064
  16. 329476
  17. 427716
  18. 53361
  19. 616225
  20. 28665316
  21. 206116
  22. 8037225
  23. 33124
  24. 480249
  25. 43264
  26. 10284849
  27. 18045504
  28. 283024
  29. 139129
  30. 978121
  31. 10137856
  32. 6220036
  33. 30902481
  34. 25421764
  35. 986049
  36. 16129
  37. 148996
  38. 80656
  39. 16900
  40. 38651089

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