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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 201 · 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. 1.6942² =
  2. 2.804² =
  3. 3.367² =
  4. 4.326² =
  5. 5.310² =
  6. 6.550² =
  7. 7.8908² =
  8. 8.367² =
  9. 9.697² =
  10. 10.4803² =
  11. 11.7899² =
  12. 12.530² =
  13. 13.118² =
  14. 14.286² =
  15. 15.2397² =
  16. 16.624² =
  17. 17.968² =
  18. 18.9598² =
  19. 19.2856² =
  20. 20.612² =
  21. 21.344² =
  22. 22.2622² =
  23. 23.900² =
  24. 24.875² =
  25. 25.2192² =
  26. 26.940² =
  27. 27.468² =
  28. 28.411² =
  29. 29.950² =
  30. 30.3980² =
  31. 31.196² =
  32. 32.558² =
  33. 33.3436² =
  34. 34.932² =
  35. 35.355² =
  36. 36.648² =
  37. 37.666² =
  38. 38.944² =
  39. 39.786² =
  40. 40.682² =

Answer key

  1. 48191364
  2. 646416
  3. 134689
  4. 106276
  5. 96100
  6. 302500
  7. 79352464
  8. 134689
  9. 485809
  10. 23068809
  11. 62394201
  12. 280900
  13. 13924
  14. 81796
  15. 5745609
  16. 389376
  17. 937024
  18. 92121604
  19. 8156736
  20. 374544
  21. 118336
  22. 6874884
  23. 810000
  24. 765625
  25. 4804864
  26. 883600
  27. 219024
  28. 168921
  29. 902500
  30. 15840400
  31. 38416
  32. 311364
  33. 11806096
  34. 868624
  35. 126025
  36. 419904
  37. 443556
  38. 891136
  39. 617796
  40. 465124

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