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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 3 · 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. 1.439² =
  2. 2.2133² =
  3. 3.610² =
  4. 4.987² =
  5. 5.325² =
  6. 6.214² =
  7. 7.368² =
  8. 8.1083² =
  9. 9.869² =
  10. 10.774² =
  11. 11.700² =
  12. 12.424² =
  13. 13.119² =
  14. 14.352² =
  15. 15.634² =
  16. 16.858² =
  17. 17.2415² =
  18. 18.241² =
  19. 19.436² =
  20. 20.3016² =
  21. 21.277² =
  22. 22.712² =
  23. 23.9309² =
  24. 24.1595² =
  25. 25.235² =
  26. 26.927² =
  27. 27.307² =
  28. 28.706² =
  29. 29.5290² =
  30. 30.949² =
  31. 31.878² =
  32. 32.480² =
  33. 33.9756² =
  34. 34.3440² =
  35. 35.936² =
  36. 36.550² =
  37. 37.483² =
  38. 38.6122² =
  39. 39.380² =
  40. 40.9092² =

Answer key

  1. 192721
  2. 4549689
  3. 372100
  4. 974169
  5. 105625
  6. 45796
  7. 135424
  8. 1172889
  9. 755161
  10. 599076
  11. 490000
  12. 179776
  13. 14161
  14. 123904
  15. 401956
  16. 736164
  17. 5832225
  18. 58081
  19. 190096
  20. 9096256
  21. 76729
  22. 506944
  23. 86657481
  24. 2544025
  25. 55225
  26. 859329
  27. 94249
  28. 498436
  29. 27984100
  30. 900601
  31. 770884
  32. 230400
  33. 95179536
  34. 11833600
  35. 876096
  36. 302500
  37. 233289
  38. 37478884
  39. 144400
  40. 82664464

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