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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 73 · 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. 1.559² =
  2. 2.301² =
  3. 3.341² =
  4. 4.307² =
  5. 5.849² =
  6. 6.185² =
  7. 7.2159² =
  8. 8.536² =
  9. 9.575² =
  10. 10.409² =
  11. 11.940² =
  12. 12.725² =
  13. 13.2296² =
  14. 14.125² =
  15. 15.787² =
  16. 16.492² =
  17. 17.679² =
  18. 18.979² =
  19. 19.602² =
  20. 20.5415² =
  21. 21.851² =
  22. 22.9737² =
  23. 23.120² =
  24. 24.451² =
  25. 25.2953² =
  26. 26.8916² =
  27. 27.699² =
  28. 28.589² =
  29. 29.725² =
  30. 30.413² =
  31. 31.8194² =
  32. 32.807² =
  33. 33.703² =
  34. 34.837² =
  35. 35.552² =
  36. 36.463² =
  37. 37.283² =
  38. 38.452² =
  39. 39.387² =
  40. 40.393² =

Answer key

  1. 312481
  2. 90601
  3. 116281
  4. 94249
  5. 720801
  6. 34225
  7. 4661281
  8. 287296
  9. 330625
  10. 167281
  11. 883600
  12. 525625
  13. 5271616
  14. 15625
  15. 619369
  16. 242064
  17. 461041
  18. 958441
  19. 362404
  20. 29322225
  21. 724201
  22. 94809169
  23. 14400
  24. 203401
  25. 8720209
  26. 79495056
  27. 488601
  28. 346921
  29. 525625
  30. 170569
  31. 67141636
  32. 651249
  33. 494209
  34. 700569
  35. 304704
  36. 214369
  37. 80089
  38. 204304
  39. 149769
  40. 154449

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