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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 860 · 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. 1.492² =
  2. 2.2587² =
  3. 3.253² =
  4. 4.943² =
  5. 5.331² =
  6. 6.763² =
  7. 7.417² =
  8. 8.1733² =
  9. 9.949² =
  10. 10.1630² =
  11. 11.182² =
  12. 12.281² =
  13. 13.234² =
  14. 14.617² =
  15. 15.525² =
  16. 16.177² =
  17. 17.346² =
  18. 18.797² =
  19. 19.617² =
  20. 20.4476² =
  21. 21.3491² =
  22. 22.6327² =
  23. 23.9325² =
  24. 24.217² =
  25. 25.6778² =
  26. 26.2776² =
  27. 27.629² =
  28. 28.1193² =
  29. 29.458² =
  30. 30.618² =
  31. 31.754² =
  32. 32.103² =
  33. 33.302² =
  34. 34.604² =
  35. 35.336² =
  36. 36.267² =
  37. 37.705² =
  38. 38.7913² =
  39. 39.140² =
  40. 40.422² =

Answer key

  1. 242064
  2. 6692569
  3. 64009
  4. 889249
  5. 109561
  6. 582169
  7. 173889
  8. 3003289
  9. 900601
  10. 2656900
  11. 33124
  12. 78961
  13. 54756
  14. 380689
  15. 275625
  16. 31329
  17. 119716
  18. 635209
  19. 380689
  20. 20034576
  21. 12187081
  22. 40030929
  23. 86955625
  24. 47089
  25. 45941284
  26. 7706176
  27. 395641
  28. 1423249
  29. 209764
  30. 381924
  31. 568516
  32. 10609
  33. 91204
  34. 364816
  35. 112896
  36. 71289
  37. 497025
  38. 62615569
  39. 19600
  40. 178084

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