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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 238 · 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. 1.556² =
  2. 2.227² =
  3. 3.2475² =
  4. 4.4320² =
  5. 5.7960² =
  6. 6.198² =
  7. 7.5215² =
  8. 8.666² =
  9. 9.2603² =
  10. 10.778² =
  11. 11.728² =
  12. 12.237² =
  13. 13.3435² =
  14. 14.772² =
  15. 15.161² =
  16. 16.989² =
  17. 17.576² =
  18. 18.3929² =
  19. 19.2661² =
  20. 20.113² =
  21. 21.254² =
  22. 22.535² =
  23. 23.8786² =
  24. 24.525² =
  25. 25.786² =
  26. 26.141² =
  27. 27.3573² =
  28. 28.8289² =
  29. 29.9151² =
  30. 30.458² =
  31. 31.939² =
  32. 32.788² =
  33. 33.2543² =
  34. 34.450² =
  35. 35.5150² =
  36. 36.701² =
  37. 37.5864² =
  38. 38.692² =
  39. 39.6373² =
  40. 40.3479² =

Answer key

  1. 309136
  2. 51529
  3. 6125625
  4. 18662400
  5. 63361600
  6. 39204
  7. 27196225
  8. 443556
  9. 6775609
  10. 605284
  11. 529984
  12. 56169
  13. 11799225
  14. 595984
  15. 25921
  16. 978121
  17. 331776
  18. 15437041
  19. 7080921
  20. 12769
  21. 64516
  22. 286225
  23. 77193796
  24. 275625
  25. 617796
  26. 19881
  27. 12766329
  28. 68707521
  29. 83740801
  30. 209764
  31. 881721
  32. 620944
  33. 6466849
  34. 202500
  35. 26522500
  36. 491401
  37. 34386496
  38. 478864
  39. 40615129
  40. 12103441

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