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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 613 · 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. 1.169² =
  2. 2.646² =
  3. 3.279² =
  4. 4.1832² =
  5. 5.3257² =
  6. 6.783² =
  7. 7.813² =
  8. 8.236² =
  9. 9.182² =
  10. 10.249² =
  11. 11.666² =
  12. 12.1884² =
  13. 13.2859² =
  14. 14.449² =
  15. 15.779² =
  16. 16.1541² =
  17. 17.263² =
  18. 18.174² =
  19. 19.128² =
  20. 20.7480² =
  21. 21.322² =
  22. 22.4893² =
  23. 23.9973² =
  24. 24.2869² =
  25. 25.622² =
  26. 26.183² =
  27. 27.905² =
  28. 28.525² =
  29. 29.285² =
  30. 30.609² =
  31. 31.9220² =
  32. 32.123² =
  33. 33.9661² =
  34. 34.453² =
  35. 35.885² =
  36. 36.463² =
  37. 37.329² =
  38. 38.721² =
  39. 39.796² =
  40. 40.891² =

Answer key

  1. 28561
  2. 417316
  3. 77841
  4. 3356224
  5. 10608049
  6. 613089
  7. 660969
  8. 55696
  9. 33124
  10. 62001
  11. 443556
  12. 3549456
  13. 8173881
  14. 201601
  15. 606841
  16. 2374681
  17. 69169
  18. 30276
  19. 16384
  20. 55950400
  21. 103684
  22. 23941449
  23. 99460729
  24. 8231161
  25. 386884
  26. 33489
  27. 819025
  28. 275625
  29. 81225
  30. 370881
  31. 85008400
  32. 15129
  33. 93334921
  34. 205209
  35. 783225
  36. 214369
  37. 108241
  38. 519841
  39. 633616
  40. 793881

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