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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 467 · 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. 1.475² =
  2. 2.479² =
  3. 3.3384² =
  4. 4.9565² =
  5. 5.350² =
  6. 6.908² =
  7. 7.282² =
  8. 8.938² =
  9. 9.2959² =
  10. 10.8983² =
  11. 11.8062² =
  12. 12.312² =
  13. 13.829² =
  14. 14.237² =
  15. 15.640² =
  16. 16.2007² =
  17. 17.331² =
  18. 18.558² =
  19. 19.329² =
  20. 20.866² =
  21. 21.2672² =
  22. 22.914² =
  23. 23.115² =
  24. 24.723² =
  25. 25.306² =
  26. 26.2576² =
  27. 27.184² =
  28. 28.5122² =
  29. 29.5138² =
  30. 30.203² =
  31. 31.141² =
  32. 32.7261² =
  33. 33.250² =
  34. 34.6548² =
  35. 35.228² =
  36. 36.590² =
  37. 37.3754² =
  38. 38.7259² =
  39. 39.528² =
  40. 40.139² =

Answer key

  1. 225625
  2. 229441
  3. 11451456
  4. 91489225
  5. 122500
  6. 824464
  7. 79524
  8. 879844
  9. 8755681
  10. 80694289
  11. 64995844
  12. 97344
  13. 687241
  14. 56169
  15. 409600
  16. 4028049
  17. 109561
  18. 311364
  19. 108241
  20. 749956
  21. 7139584
  22. 835396
  23. 13225
  24. 522729
  25. 93636
  26. 6635776
  27. 33856
  28. 26234884
  29. 26399044
  30. 41209
  31. 19881
  32. 52722121
  33. 62500
  34. 42876304
  35. 51984
  36. 348100
  37. 14092516
  38. 52693081
  39. 278784
  40. 19321

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