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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 382 · 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. 1.737² =
  2. 2.534² =
  3. 3.543² =
  4. 4.347² =
  5. 5.102² =
  6. 6.898² =
  7. 7.1923² =
  8. 8.337² =
  9. 9.395² =
  10. 10.4145² =
  11. 11.3525² =
  12. 12.2289² =
  13. 13.801² =
  14. 14.950² =
  15. 15.257² =
  16. 16.639² =
  17. 17.628² =
  18. 18.2333² =
  19. 19.181² =
  20. 20.7461² =
  21. 21.8775² =
  22. 22.345² =
  23. 23.308² =
  24. 24.574² =
  25. 25.4731² =
  26. 26.464² =
  27. 27.692² =
  28. 28.868² =
  29. 29.111² =
  30. 30.661² =
  31. 31.346² =
  32. 32.7731² =
  33. 33.1887² =
  34. 34.2107² =
  35. 35.826² =
  36. 36.921² =
  37. 37.145² =
  38. 38.466² =
  39. 39.383² =
  40. 40.842² =

Answer key

  1. 543169
  2. 285156
  3. 294849
  4. 120409
  5. 10404
  6. 806404
  7. 3697929
  8. 113569
  9. 156025
  10. 17181025
  11. 12425625
  12. 5239521
  13. 641601
  14. 902500
  15. 66049
  16. 408321
  17. 394384
  18. 5442889
  19. 32761
  20. 55666521
  21. 77000625
  22. 119025
  23. 94864
  24. 329476
  25. 22382361
  26. 215296
  27. 478864
  28. 753424
  29. 12321
  30. 436921
  31. 119716
  32. 59768361
  33. 3560769
  34. 4439449
  35. 682276
  36. 848241
  37. 21025
  38. 217156
  39. 146689
  40. 708964

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