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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 903 · 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. 1.218² =
  2. 2.543² =
  3. 3.562² =
  4. 4.144² =
  5. 5.314² =
  6. 6.682² =
  7. 7.336² =
  8. 8.9612² =
  9. 9.8913² =
  10. 10.990² =
  11. 11.319² =
  12. 12.303² =
  13. 13.2727² =
  14. 14.454² =
  15. 15.741² =
  16. 16.243² =
  17. 17.160² =
  18. 18.294² =
  19. 19.589² =
  20. 20.868² =
  21. 21.112² =
  22. 22.792² =
  23. 23.930² =
  24. 24.6429² =
  25. 25.665² =
  26. 26.1164² =
  27. 27.8312² =
  28. 28.712² =
  29. 29.701² =
  30. 30.697² =
  31. 31.670² =
  32. 32.5490² =
  33. 33.304² =
  34. 34.449² =
  35. 35.743² =
  36. 36.864² =
  37. 37.247² =
  38. 38.5145² =
  39. 39.761² =
  40. 40.996² =

Answer key

  1. 47524
  2. 294849
  3. 315844
  4. 20736
  5. 98596
  6. 465124
  7. 112896
  8. 92390544
  9. 79441569
  10. 980100
  11. 101761
  12. 91809
  13. 7436529
  14. 206116
  15. 549081
  16. 59049
  17. 25600
  18. 86436
  19. 346921
  20. 753424
  21. 12544
  22. 627264
  23. 864900
  24. 41332041
  25. 442225
  26. 1354896
  27. 69089344
  28. 506944
  29. 491401
  30. 485809
  31. 448900
  32. 30140100
  33. 92416
  34. 201601
  35. 552049
  36. 746496
  37. 61009
  38. 26471025
  39. 579121
  40. 992016

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