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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 609 · 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. 1.446² =
  2. 2.4598² =
  3. 3.1954² =
  4. 4.878² =
  5. 5.897² =
  6. 6.358² =
  7. 7.430² =
  8. 8.393² =
  9. 9.261² =
  10. 10.282² =
  11. 11.600² =
  12. 12.535² =
  13. 13.902² =
  14. 14.468² =
  15. 15.2109² =
  16. 16.6799² =
  17. 17.533² =
  18. 18.974² =
  19. 19.482² =
  20. 20.468² =
  21. 21.728² =
  22. 22.131² =
  23. 23.769² =
  24. 24.9238² =
  25. 25.4865² =
  26. 26.4321² =
  27. 27.955² =
  28. 28.315² =
  29. 29.253² =
  30. 30.8704² =
  31. 31.864² =
  32. 32.5481² =
  33. 33.968² =
  34. 34.114² =
  35. 35.280² =
  36. 36.673² =
  37. 37.372² =
  38. 38.767² =
  39. 39.7889² =
  40. 40.273² =

Answer key

  1. 198916
  2. 21141604
  3. 3818116
  4. 770884
  5. 804609
  6. 128164
  7. 184900
  8. 154449
  9. 68121
  10. 79524
  11. 360000
  12. 286225
  13. 813604
  14. 219024
  15. 4447881
  16. 46226401
  17. 284089
  18. 948676
  19. 232324
  20. 219024
  21. 529984
  22. 17161
  23. 591361
  24. 85340644
  25. 23668225
  26. 18671041
  27. 912025
  28. 99225
  29. 64009
  30. 75759616
  31. 746496
  32. 30041361
  33. 937024
  34. 12996
  35. 78400
  36. 452929
  37. 138384
  38. 588289
  39. 62236321
  40. 74529

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