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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 599 · 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. 1.861² =
  2. 2.176² =
  3. 3.108² =
  4. 4.832² =
  5. 5.3035² =
  6. 6.132² =
  7. 7.449² =
  8. 8.152² =
  9. 9.901² =
  10. 10.573² =
  11. 11.5308² =
  12. 12.782² =
  13. 13.574² =
  14. 14.914² =
  15. 15.856² =
  16. 16.557² =
  17. 17.695² =
  18. 18.244² =
  19. 19.984² =
  20. 20.406² =
  21. 21.6584² =
  22. 22.165² =
  23. 23.944² =
  24. 24.6760² =
  25. 25.310² =
  26. 26.9574² =
  27. 27.222² =
  28. 28.175² =
  29. 29.784² =
  30. 30.625² =
  31. 31.928² =
  32. 32.509² =
  33. 33.225² =
  34. 34.256² =
  35. 35.924² =
  36. 36.395² =
  37. 37.894² =
  38. 38.322² =
  39. 39.102² =
  40. 40.982² =

Answer key

  1. 741321
  2. 30976
  3. 11664
  4. 692224
  5. 9211225
  6. 17424
  7. 201601
  8. 23104
  9. 811801
  10. 328329
  11. 28174864
  12. 611524
  13. 329476
  14. 835396
  15. 732736
  16. 310249
  17. 483025
  18. 59536
  19. 968256
  20. 164836
  21. 43349056
  22. 27225
  23. 891136
  24. 45697600
  25. 96100
  26. 91661476
  27. 49284
  28. 30625
  29. 614656
  30. 390625
  31. 861184
  32. 259081
  33. 50625
  34. 65536
  35. 853776
  36. 156025
  37. 799236
  38. 103684
  39. 10404
  40. 964324

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