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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 375 · 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. 1.2931² =
  2. 2.206² =
  3. 3.294² =
  4. 4.395² =
  5. 5.819² =
  6. 6.287² =
  7. 7.817² =
  8. 8.8350² =
  9. 9.998² =
  10. 10.741² =
  11. 11.192² =
  12. 12.3093² =
  13. 13.901² =
  14. 14.653² =
  15. 15.7514² =
  16. 16.5183² =
  17. 17.4919² =
  18. 18.703² =
  19. 19.345² =
  20. 20.2296² =
  21. 21.7998² =
  22. 22.290² =
  23. 23.719² =
  24. 24.9721² =
  25. 25.8515² =
  26. 26.670² =
  27. 27.857² =
  28. 28.2558² =
  29. 29.7678² =
  30. 30.213² =
  31. 31.1786² =
  32. 32.866² =
  33. 33.2818² =
  34. 34.879² =
  35. 35.2084² =
  36. 36.4867² =
  37. 37.165² =
  38. 38.5565² =
  39. 39.215² =
  40. 40.9569² =

Answer key

  1. 8590761
  2. 42436
  3. 86436
  4. 156025
  5. 670761
  6. 82369
  7. 667489
  8. 69722500
  9. 996004
  10. 549081
  11. 36864
  12. 9566649
  13. 811801
  14. 426409
  15. 56460196
  16. 26863489
  17. 24196561
  18. 494209
  19. 119025
  20. 5271616
  21. 63968004
  22. 84100
  23. 516961
  24. 94497841
  25. 72505225
  26. 448900
  27. 734449
  28. 6543364
  29. 58951684
  30. 45369
  31. 3189796
  32. 749956
  33. 7941124
  34. 772641
  35. 4343056
  36. 23687689
  37. 27225
  38. 30969225
  39. 46225
  40. 91565761

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