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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 602 · 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. 1.874² =
  2. 2.175² =
  3. 3.450² =
  4. 4.573² =
  5. 5.358² =
  6. 6.980² =
  7. 7.5260² =
  8. 8.639² =
  9. 9.514² =
  10. 10.155² =
  11. 11.6981² =
  12. 12.2318² =
  13. 13.754² =
  14. 14.8527² =
  15. 15.634² =
  16. 16.1882² =
  17. 17.244² =
  18. 18.3401² =
  19. 19.864² =
  20. 20.3082² =
  21. 21.134² =
  22. 22.8052² =
  23. 23.8076² =
  24. 24.7780² =
  25. 25.198² =
  26. 26.1351² =
  27. 27.425² =
  28. 28.834² =
  29. 29.160² =
  30. 30.125² =
  31. 31.513² =
  32. 32.474² =
  33. 33.251² =
  34. 34.2095² =
  35. 35.657² =
  36. 36.9153² =
  37. 37.404² =
  38. 38.220² =
  39. 39.616² =
  40. 40.698² =

Answer key

  1. 763876
  2. 30625
  3. 202500
  4. 328329
  5. 128164
  6. 960400
  7. 27667600
  8. 408321
  9. 264196
  10. 24025
  11. 48734361
  12. 5373124
  13. 568516
  14. 72709729
  15. 401956
  16. 3541924
  17. 59536
  18. 11566801
  19. 746496
  20. 9498724
  21. 17956
  22. 64834704
  23. 65221776
  24. 60528400
  25. 39204
  26. 1825201
  27. 180625
  28. 695556
  29. 25600
  30. 15625
  31. 263169
  32. 224676
  33. 63001
  34. 4389025
  35. 431649
  36. 83777409
  37. 163216
  38. 48400
  39. 379456
  40. 487204

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