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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 639 · 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. 1.121² =
  2. 2.6428² =
  3. 3.518² =
  4. 4.5133² =
  5. 5.270² =
  6. 6.874² =
  7. 7.357² =
  8. 8.892² =
  9. 9.3335² =
  10. 10.856² =
  11. 11.3572² =
  12. 12.6904² =
  13. 13.253² =
  14. 14.339² =
  15. 15.1834² =
  16. 16.196² =
  17. 17.385² =
  18. 18.521² =
  19. 19.319² =
  20. 20.218² =
  21. 21.291² =
  22. 22.1248² =
  23. 23.215² =
  24. 24.5799² =
  25. 25.1914² =
  26. 26.237² =
  27. 27.527² =
  28. 28.695² =
  29. 29.767² =
  30. 30.488² =
  31. 31.621² =
  32. 32.969² =
  33. 33.672² =
  34. 34.577² =
  35. 35.2841² =
  36. 36.235² =
  37. 37.3733² =
  38. 38.280² =
  39. 39.9844² =
  40. 40.5825² =

Answer key

  1. 14641
  2. 41319184
  3. 268324
  4. 26347689
  5. 72900
  6. 763876
  7. 127449
  8. 795664
  9. 11122225
  10. 732736
  11. 12759184
  12. 47665216
  13. 64009
  14. 114921
  15. 3363556
  16. 38416
  17. 148225
  18. 271441
  19. 101761
  20. 47524
  21. 84681
  22. 1557504
  23. 46225
  24. 33628401
  25. 3663396
  26. 56169
  27. 277729
  28. 483025
  29. 588289
  30. 238144
  31. 385641
  32. 938961
  33. 451584
  34. 332929
  35. 8071281
  36. 55225
  37. 13935289
  38. 78400
  39. 96904336
  40. 33930625

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