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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 949 · 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. 1.155² =
  2. 2.266² =
  3. 3.661² =
  4. 4.2722² =
  5. 5.362² =
  6. 6.634² =
  7. 7.2852² =
  8. 8.1689² =
  9. 9.730² =
  10. 10.710² =
  11. 11.730² =
  12. 12.2791² =
  13. 13.384² =
  14. 14.263² =
  15. 15.290² =
  16. 16.7241² =
  17. 17.441² =
  18. 18.532² =
  19. 19.168² =
  20. 20.631² =
  21. 21.5865² =
  22. 22.551² =
  23. 23.8619² =
  24. 24.815² =
  25. 25.503² =
  26. 26.9902² =
  27. 27.652² =
  28. 28.475² =
  29. 29.965² =
  30. 30.725² =
  31. 31.630² =
  32. 32.253² =
  33. 33.673² =
  34. 34.274² =
  35. 35.1145² =
  36. 36.9171² =
  37. 37.1294² =
  38. 38.657² =
  39. 39.926² =
  40. 40.289² =

Answer key

  1. 24025
  2. 70756
  3. 436921
  4. 7409284
  5. 131044
  6. 401956
  7. 8133904
  8. 2852721
  9. 532900
  10. 504100
  11. 532900
  12. 7789681
  13. 147456
  14. 69169
  15. 84100
  16. 52432081
  17. 194481
  18. 283024
  19. 28224
  20. 398161
  21. 34398225
  22. 303601
  23. 74287161
  24. 664225
  25. 253009
  26. 98049604
  27. 425104
  28. 225625
  29. 931225
  30. 525625
  31. 396900
  32. 64009
  33. 452929
  34. 75076
  35. 1311025
  36. 84107241
  37. 1674436
  38. 431649
  39. 857476
  40. 83521

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