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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 60 · 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. 1.9518² =
  2. 2.9849² =
  3. 3.367² =
  4. 4.703² =
  5. 5.925² =
  6. 6.6162² =
  7. 7.908² =
  8. 8.495² =
  9. 9.331² =
  10. 10.234² =
  11. 11.313² =
  12. 12.2962² =
  13. 13.925² =
  14. 14.985² =
  15. 15.210² =
  16. 16.335² =
  17. 17.4517² =
  18. 18.590² =
  19. 19.1105² =
  20. 20.461² =
  21. 21.546² =
  22. 22.398² =
  23. 23.699² =
  24. 24.223² =
  25. 25.866² =
  26. 26.5784² =
  27. 27.408² =
  28. 28.164² =
  29. 29.287² =
  30. 30.173² =
  31. 31.322² =
  32. 32.9464² =
  33. 33.751² =
  34. 34.725² =
  35. 35.2648² =
  36. 36.669² =
  37. 37.412² =
  38. 38.776² =
  39. 39.403² =
  40. 40.800² =

Answer key

  1. 90592324
  2. 97002801
  3. 134689
  4. 494209
  5. 855625
  6. 37970244
  7. 824464
  8. 245025
  9. 109561
  10. 54756
  11. 97969
  12. 8773444
  13. 855625
  14. 970225
  15. 44100
  16. 112225
  17. 20403289
  18. 348100
  19. 1221025
  20. 212521
  21. 298116
  22. 158404
  23. 488601
  24. 49729
  25. 749956
  26. 33454656
  27. 166464
  28. 26896
  29. 82369
  30. 29929
  31. 103684
  32. 89567296
  33. 564001
  34. 525625
  35. 7011904
  36. 447561
  37. 169744
  38. 602176
  39. 162409
  40. 640000

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