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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 246 · 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. 1.221² =
  2. 2.617² =
  3. 3.238² =
  4. 4.842² =
  5. 5.734² =
  6. 6.829² =
  7. 7.159² =
  8. 8.322² =
  9. 9.8276² =
  10. 10.7329² =
  11. 11.633² =
  12. 12.1591² =
  13. 13.5177² =
  14. 14.226² =
  15. 15.2836² =
  16. 16.386² =
  17. 17.6986² =
  18. 18.4888² =
  19. 19.498² =
  20. 20.214² =
  21. 21.241² =
  22. 22.2907² =
  23. 23.549² =
  24. 24.450² =
  25. 25.8356² =
  26. 26.778² =
  27. 27.3385² =
  28. 28.827² =
  29. 29.139² =
  30. 30.3542² =
  31. 31.735² =
  32. 32.378² =
  33. 33.271² =
  34. 34.804² =
  35. 35.430² =
  36. 36.252² =
  37. 37.980² =
  38. 38.294² =
  39. 39.720² =
  40. 40.117² =

Answer key

  1. 48841
  2. 380689
  3. 56644
  4. 708964
  5. 538756
  6. 687241
  7. 25281
  8. 103684
  9. 68492176
  10. 53714241
  11. 400689
  12. 2531281
  13. 26801329
  14. 51076
  15. 8042896
  16. 148996
  17. 48804196
  18. 23892544
  19. 248004
  20. 45796
  21. 58081
  22. 8450649
  23. 301401
  24. 202500
  25. 69822736
  26. 605284
  27. 11458225
  28. 683929
  29. 19321
  30. 12545764
  31. 540225
  32. 142884
  33. 73441
  34. 646416
  35. 184900
  36. 63504
  37. 960400
  38. 86436
  39. 518400
  40. 13689

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