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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 480 · 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. 1.2196² =
  2. 2.3781² =
  3. 3.3009² =
  4. 4.9186² =
  5. 5.335² =
  6. 6.904² =
  7. 7.474² =
  8. 8.333² =
  9. 9.606² =
  10. 10.420² =
  11. 11.6517² =
  12. 12.174² =
  13. 13.367² =
  14. 14.262² =
  15. 15.9743² =
  16. 16.166² =
  17. 17.5412² =
  18. 18.113² =
  19. 19.794² =
  20. 20.376² =
  21. 21.9203² =
  22. 22.110² =
  23. 23.249² =
  24. 24.867² =
  25. 25.243² =
  26. 26.2289² =
  27. 27.863² =
  28. 28.1159² =
  29. 29.387² =
  30. 30.523² =
  31. 31.977² =
  32. 32.215² =
  33. 33.450² =
  34. 34.5147² =
  35. 35.208² =
  36. 36.307² =
  37. 37.684² =
  38. 38.218² =
  39. 39.9323² =
  40. 40.3631² =

Answer key

  1. 4822416
  2. 14295961
  3. 9054081
  4. 84382596
  5. 112225
  6. 817216
  7. 224676
  8. 110889
  9. 367236
  10. 176400
  11. 42471289
  12. 30276
  13. 134689
  14. 68644
  15. 94926049
  16. 27556
  17. 29289744
  18. 12769
  19. 630436
  20. 141376
  21. 84695209
  22. 12100
  23. 62001
  24. 751689
  25. 59049
  26. 5239521
  27. 744769
  28. 1343281
  29. 149769
  30. 273529
  31. 954529
  32. 46225
  33. 202500
  34. 26491609
  35. 43264
  36. 94249
  37. 467856
  38. 47524
  39. 86918329
  40. 13184161

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