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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 265 · 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. 1.387² =
  2. 2.539² =
  3. 3.2686² =
  4. 4.3291² =
  5. 5.167² =
  6. 6.2470² =
  7. 7.135² =
  8. 8.148² =
  9. 9.973² =
  10. 10.108² =
  11. 11.9707² =
  12. 12.125² =
  13. 13.3514² =
  14. 14.487² =
  15. 15.244² =
  16. 16.117² =
  17. 17.565² =
  18. 18.161² =
  19. 19.176² =
  20. 20.936² =
  21. 21.5585² =
  22. 22.5975² =
  23. 23.3488² =
  24. 24.322² =
  25. 25.1444² =
  26. 26.411² =
  27. 27.199² =
  28. 28.687² =
  29. 29.8585² =
  30. 30.525² =
  31. 31.573² =
  32. 32.4881² =
  33. 33.423² =
  34. 34.2212² =
  35. 35.556² =
  36. 36.153² =
  37. 37.292² =
  38. 38.9201² =
  39. 39.485² =
  40. 40.5793² =

Answer key

  1. 149769
  2. 290521
  3. 7214596
  4. 10830681
  5. 27889
  6. 6100900
  7. 18225
  8. 21904
  9. 946729
  10. 11664
  11. 94225849
  12. 15625
  13. 12348196
  14. 237169
  15. 59536
  16. 13689
  17. 319225
  18. 25921
  19. 30976
  20. 876096
  21. 31192225
  22. 35700625
  23. 12166144
  24. 103684
  25. 2085136
  26. 168921
  27. 39601
  28. 471969
  29. 73702225
  30. 275625
  31. 328329
  32. 23824161
  33. 178929
  34. 4892944
  35. 309136
  36. 23409
  37. 85264
  38. 84658401
  39. 235225
  40. 33558849

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