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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 395 · 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. 1.952² =
  2. 2.1763² =
  3. 3.268² =
  4. 4.7834² =
  5. 5.569² =
  6. 6.8597² =
  7. 7.559² =
  8. 8.811² =
  9. 9.171² =
  10. 10.1271² =
  11. 11.2449² =
  12. 12.4320² =
  13. 13.3204² =
  14. 14.348² =
  15. 15.430² =
  16. 16.365² =
  17. 17.1295² =
  18. 18.256² =
  19. 19.549² =
  20. 20.792² =
  21. 21.992² =
  22. 22.472² =
  23. 23.819² =
  24. 24.252² =
  25. 25.573² =
  26. 26.6611² =
  27. 27.235² =
  28. 28.7623² =
  29. 29.6715² =
  30. 30.175² =
  31. 31.127² =
  32. 32.9570² =
  33. 33.261² =
  34. 34.748² =
  35. 35.427² =
  36. 36.334² =
  37. 37.3716² =
  38. 38.463² =
  39. 39.7704² =
  40. 40.143² =

Answer key

  1. 906304
  2. 3108169
  3. 71824
  4. 61371556
  5. 323761
  6. 73908409
  7. 312481
  8. 657721
  9. 29241
  10. 1615441
  11. 5997601
  12. 18662400
  13. 10265616
  14. 121104
  15. 184900
  16. 133225
  17. 1677025
  18. 65536
  19. 301401
  20. 627264
  21. 984064
  22. 222784
  23. 670761
  24. 63504
  25. 328329
  26. 43705321
  27. 55225
  28. 58110129
  29. 45091225
  30. 30625
  31. 16129
  32. 91584900
  33. 68121
  34. 559504
  35. 182329
  36. 111556
  37. 13808656
  38. 214369
  39. 59351616
  40. 20449

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