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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 546 · 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. 1.173² =
  2. 2.564² =
  3. 3.401² =
  4. 4.672² =
  5. 5.698² =
  6. 6.755² =
  7. 7.600² =
  8. 8.127² =
  9. 9.337² =
  10. 10.586² =
  11. 11.657² =
  12. 12.864² =
  13. 13.169² =
  14. 14.2221² =
  15. 15.799² =
  16. 16.449² =
  17. 17.369² =
  18. 18.8554² =
  19. 19.499² =
  20. 20.7695² =
  21. 21.629² =
  22. 22.162² =
  23. 23.450² =
  24. 24.202² =
  25. 25.830² =
  26. 26.242² =
  27. 27.1779² =
  28. 28.2809² =
  29. 29.209² =
  30. 30.132² =
  31. 31.4102² =
  32. 32.485² =
  33. 33.807² =
  34. 34.690² =
  35. 35.8953² =
  36. 36.107² =
  37. 37.6065² =
  38. 38.104² =
  39. 39.612² =
  40. 40.521² =

Answer key

  1. 29929
  2. 318096
  3. 160801
  4. 451584
  5. 487204
  6. 570025
  7. 360000
  8. 16129
  9. 113569
  10. 343396
  11. 431649
  12. 746496
  13. 28561
  14. 4932841
  15. 638401
  16. 201601
  17. 136161
  18. 73170916
  19. 249001
  20. 59213025
  21. 395641
  22. 26244
  23. 202500
  24. 40804
  25. 688900
  26. 58564
  27. 3164841
  28. 7890481
  29. 43681
  30. 17424
  31. 16826404
  32. 235225
  33. 651249
  34. 476100
  35. 80156209
  36. 11449
  37. 36784225
  38. 10816
  39. 374544
  40. 271441

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