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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 983 · 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. 1.166² =
  2. 2.1150² =
  3. 3.6770² =
  4. 4.314² =
  5. 5.770² =
  6. 6.622² =
  7. 7.220² =
  8. 8.234² =
  9. 9.179² =
  10. 10.1015² =
  11. 11.193² =
  12. 12.3112² =
  13. 13.2859² =
  14. 14.343² =
  15. 15.675² =
  16. 16.8855² =
  17. 17.1219² =
  18. 18.8131² =
  19. 19.4002² =
  20. 20.9571² =
  21. 21.811² =
  22. 22.1674² =
  23. 23.135² =
  24. 24.399² =
  25. 25.372² =
  26. 26.220² =
  27. 27.705² =
  28. 28.126² =
  29. 29.9071² =
  30. 30.785² =
  31. 31.151² =
  32. 32.819² =
  33. 33.1260² =
  34. 34.4566² =
  35. 35.921² =
  36. 36.3118² =
  37. 37.349² =
  38. 38.384² =
  39. 39.401² =
  40. 40.336² =

Answer key

  1. 27556
  2. 1322500
  3. 45832900
  4. 98596
  5. 592900
  6. 386884
  7. 48400
  8. 54756
  9. 32041
  10. 1030225
  11. 37249
  12. 9684544
  13. 8173881
  14. 117649
  15. 455625
  16. 78411025
  17. 1485961
  18. 66113161
  19. 16016004
  20. 91604041
  21. 657721
  22. 2802276
  23. 18225
  24. 159201
  25. 138384
  26. 48400
  27. 497025
  28. 15876
  29. 82283041
  30. 616225
  31. 22801
  32. 670761
  33. 1587600
  34. 20848356
  35. 848241
  36. 9721924
  37. 121801
  38. 147456
  39. 160801
  40. 112896

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