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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 349 · 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. 1.777² =
  2. 2.555² =
  3. 3.340² =
  4. 4.921² =
  5. 5.256² =
  6. 6.165² =
  7. 7.352² =
  8. 8.557² =
  9. 9.473² =
  10. 10.769² =
  11. 11.9539² =
  12. 12.777² =
  13. 13.779² =
  14. 14.3094² =
  15. 15.236² =
  16. 16.7490² =
  17. 17.5799² =
  18. 18.2260² =
  19. 19.8054² =
  20. 20.6879² =
  21. 21.2522² =
  22. 22.1076² =
  23. 23.138² =
  24. 24.269² =
  25. 25.348² =
  26. 26.698² =
  27. 27.798² =
  28. 28.747² =
  29. 29.414² =
  30. 30.8991² =
  31. 31.535² =
  32. 32.3336² =
  33. 33.820² =
  34. 34.955² =
  35. 35.327² =
  36. 36.147² =
  37. 37.948² =
  38. 38.2896² =
  39. 39.766² =
  40. 40.9472² =

Answer key

  1. 603729
  2. 308025
  3. 115600
  4. 848241
  5. 65536
  6. 27225
  7. 123904
  8. 310249
  9. 223729
  10. 591361
  11. 90992521
  12. 603729
  13. 606841
  14. 9572836
  15. 55696
  16. 56100100
  17. 33628401
  18. 5107600
  19. 64866916
  20. 47320641
  21. 6360484
  22. 1157776
  23. 19044
  24. 72361
  25. 121104
  26. 487204
  27. 636804
  28. 558009
  29. 171396
  30. 80838081
  31. 286225
  32. 11128896
  33. 672400
  34. 912025
  35. 106929
  36. 21609
  37. 898704
  38. 8386816
  39. 586756
  40. 89718784

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