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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 680 · 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. 1.430² =
  2. 2.9215² =
  3. 3.4566² =
  4. 4.348² =
  5. 5.757² =
  6. 6.389² =
  7. 7.846² =
  8. 8.865² =
  9. 9.631² =
  10. 10.384² =
  11. 11.147² =
  12. 12.519² =
  13. 13.4697² =
  14. 14.8362² =
  15. 15.581² =
  16. 16.919² =
  17. 17.1338² =
  18. 18.9128² =
  19. 19.850² =
  20. 20.954² =
  21. 21.6280² =
  22. 22.530² =
  23. 23.614² =
  24. 24.3317² =
  25. 25.181² =
  26. 26.593² =
  27. 27.317² =
  28. 28.565² =
  29. 29.316² =
  30. 30.3482² =
  31. 31.611² =
  32. 32.592² =
  33. 33.9222² =
  34. 34.128² =
  35. 35.319² =
  36. 36.537² =
  37. 37.4972² =
  38. 38.1688² =
  39. 39.947² =
  40. 40.234² =

Answer key

  1. 184900
  2. 84916225
  3. 20848356
  4. 121104
  5. 573049
  6. 151321
  7. 715716
  8. 748225
  9. 398161
  10. 147456
  11. 21609
  12. 269361
  13. 22061809
  14. 69923044
  15. 337561
  16. 844561
  17. 1790244
  18. 83320384
  19. 722500
  20. 910116
  21. 39438400
  22. 280900
  23. 376996
  24. 11002489
  25. 32761
  26. 351649
  27. 100489
  28. 319225
  29. 99856
  30. 12124324
  31. 373321
  32. 350464
  33. 85045284
  34. 16384
  35. 101761
  36. 288369
  37. 24720784
  38. 2849344
  39. 896809
  40. 54756

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