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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 192 · 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. 1.695² =
  2. 2.4222² =
  3. 3.927² =
  4. 4.379² =
  5. 5.291² =
  6. 6.4877² =
  7. 7.857² =
  8. 8.495² =
  9. 9.320² =
  10. 10.7399² =
  11. 11.6414² =
  12. 12.571² =
  13. 13.7791² =
  14. 14.351² =
  15. 15.705² =
  16. 16.600² =
  17. 17.236² =
  18. 18.9891² =
  19. 19.127² =
  20. 20.155² =
  21. 21.208² =
  22. 22.571² =
  23. 23.391² =
  24. 24.677² =
  25. 25.5775² =
  26. 26.256² =
  27. 27.773² =
  28. 28.336² =
  29. 29.285² =
  30. 30.113² =
  31. 31.6609² =
  32. 32.195² =
  33. 33.153² =
  34. 34.218² =
  35. 35.362² =
  36. 36.349² =
  37. 37.289² =
  38. 38.3248² =
  39. 39.799² =
  40. 40.142² =

Answer key

  1. 483025
  2. 17825284
  3. 859329
  4. 143641
  5. 84681
  6. 23785129
  7. 734449
  8. 245025
  9. 102400
  10. 54745201
  11. 41139396
  12. 326041
  13. 60699681
  14. 123201
  15. 497025
  16. 360000
  17. 55696
  18. 97831881
  19. 16129
  20. 24025
  21. 43264
  22. 326041
  23. 152881
  24. 458329
  25. 33350625
  26. 65536
  27. 597529
  28. 112896
  29. 81225
  30. 12769
  31. 43678881
  32. 38025
  33. 23409
  34. 47524
  35. 131044
  36. 121801
  37. 83521
  38. 10549504
  39. 638401
  40. 20164

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