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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 585 · 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. 1.375² =
  2. 2.788² =
  3. 3.7101² =
  4. 4.925² =
  5. 5.600² =
  6. 6.747² =
  7. 7.9545² =
  8. 8.400² =
  9. 9.555² =
  10. 10.9218² =
  11. 11.483² =
  12. 12.595² =
  13. 13.4035² =
  14. 14.815² =
  15. 15.613² =
  16. 16.384² =
  17. 17.133² =
  18. 18.357² =
  19. 19.368² =
  20. 20.667² =
  21. 21.500² =
  22. 22.819² =
  23. 23.1986² =
  24. 24.8410² =
  25. 25.936² =
  26. 26.865² =
  27. 27.416² =
  28. 28.1009² =
  29. 29.345² =
  30. 30.885² =
  31. 31.305² =
  32. 32.7663² =
  33. 33.183² =
  34. 34.142² =
  35. 35.488² =
  36. 36.4633² =
  37. 37.3428² =
  38. 38.769² =
  39. 39.173² =
  40. 40.114² =

Answer key

  1. 140625
  2. 620944
  3. 50424201
  4. 855625
  5. 360000
  6. 558009
  7. 91107025
  8. 160000
  9. 308025
  10. 84971524
  11. 233289
  12. 354025
  13. 16281225
  14. 664225
  15. 375769
  16. 147456
  17. 17689
  18. 127449
  19. 135424
  20. 444889
  21. 250000
  22. 670761
  23. 3944196
  24. 70728100
  25. 876096
  26. 748225
  27. 173056
  28. 1018081
  29. 119025
  30. 783225
  31. 93025
  32. 58721569
  33. 33489
  34. 20164
  35. 238144
  36. 21464689
  37. 11751184
  38. 591361
  39. 29929
  40. 12996

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