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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 981 · 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. 1.298² =
  2. 2.681² =
  3. 3.6869² =
  4. 4.177² =
  5. 5.587² =
  6. 6.961² =
  7. 7.967² =
  8. 8.6271² =
  9. 9.371² =
  10. 10.142² =
  11. 11.4564² =
  12. 12.930² =
  13. 13.127² =
  14. 14.5906² =
  15. 15.201² =
  16. 16.9517² =
  17. 17.6192² =
  18. 18.564² =
  19. 19.281² =
  20. 20.367² =
  21. 21.308² =
  22. 22.331² =
  23. 23.390² =
  24. 24.5118² =
  25. 25.603² =
  26. 26.2736² =
  27. 27.979² =
  28. 28.655² =
  29. 29.164² =
  30. 30.317² =
  31. 31.431² =
  32. 32.455² =
  33. 33.933² =
  34. 34.6001² =
  35. 35.888² =
  36. 36.763² =
  37. 37.889² =
  38. 38.837² =
  39. 39.169² =
  40. 40.6395² =

Answer key

  1. 88804
  2. 463761
  3. 47183161
  4. 31329
  5. 344569
  6. 923521
  7. 935089
  8. 39325441
  9. 137641
  10. 20164
  11. 20830096
  12. 864900
  13. 16129
  14. 34880836
  15. 40401
  16. 90573289
  17. 38340864
  18. 318096
  19. 78961
  20. 134689
  21. 94864
  22. 109561
  23. 152100
  24. 26193924
  25. 363609
  26. 7485696
  27. 958441
  28. 429025
  29. 26896
  30. 100489
  31. 185761
  32. 207025
  33. 870489
  34. 36012001
  35. 788544
  36. 582169
  37. 790321
  38. 700569
  39. 28561
  40. 40896025

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