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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 249 · 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. 1.597² =
  2. 2.174² =
  3. 3.620² =
  4. 4.548² =
  5. 5.154² =
  6. 6.961² =
  7. 7.574² =
  8. 8.436² =
  9. 9.3661² =
  10. 10.292² =
  11. 11.1116² =
  12. 12.498² =
  13. 13.6834² =
  14. 14.982² =
  15. 15.6349² =
  16. 16.864² =
  17. 17.723² =
  18. 18.8978² =
  19. 19.905² =
  20. 20.283² =
  21. 21.432² =
  22. 22.139² =
  23. 23.391² =
  24. 24.249² =
  25. 25.181² =
  26. 26.2270² =
  27. 27.796² =
  28. 28.269² =
  29. 29.4351² =
  30. 30.322² =
  31. 31.5720² =
  32. 32.1059² =
  33. 33.510² =
  34. 34.2336² =
  35. 35.152² =
  36. 36.683² =
  37. 37.4654² =
  38. 38.938² =
  39. 39.467² =
  40. 40.472² =

Answer key

  1. 356409
  2. 30276
  3. 384400
  4. 300304
  5. 23716
  6. 923521
  7. 329476
  8. 190096
  9. 13402921
  10. 85264
  11. 1245456
  12. 248004
  13. 46703556
  14. 964324
  15. 40309801
  16. 746496
  17. 522729
  18. 80604484
  19. 819025
  20. 80089
  21. 186624
  22. 19321
  23. 152881
  24. 62001
  25. 32761
  26. 5152900
  27. 633616
  28. 72361
  29. 18931201
  30. 103684
  31. 32718400
  32. 1121481
  33. 260100
  34. 5456896
  35. 23104
  36. 466489
  37. 21659716
  38. 879844
  39. 218089
  40. 222784

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