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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 499 · 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. 1.112² =
  2. 2.4436² =
  3. 3.445² =
  4. 4.2796² =
  5. 5.363² =
  6. 6.182² =
  7. 7.855² =
  8. 8.446² =
  9. 9.3527² =
  10. 10.9200² =
  11. 11.4323² =
  12. 12.164² =
  13. 13.3080² =
  14. 14.516² =
  15. 15.386² =
  16. 16.253² =
  17. 17.679² =
  18. 18.505² =
  19. 19.130² =
  20. 20.9196² =
  21. 21.612² =
  22. 22.7729² =
  23. 23.9487² =
  24. 24.164² =
  25. 25.154² =
  26. 26.6977² =
  27. 27.112² =
  28. 28.692² =
  29. 29.168² =
  30. 30.8651² =
  31. 31.169² =
  32. 32.3298² =
  33. 33.2499² =
  34. 34.6912² =
  35. 35.8528² =
  36. 36.1678² =
  37. 37.737² =
  38. 38.9330² =
  39. 39.263² =
  40. 40.315² =

Answer key

  1. 12544
  2. 19678096
  3. 198025
  4. 7817616
  5. 131769
  6. 33124
  7. 731025
  8. 198916
  9. 12439729
  10. 84640000
  11. 18688329
  12. 26896
  13. 9486400
  14. 266256
  15. 148996
  16. 64009
  17. 461041
  18. 255025
  19. 16900
  20. 84566416
  21. 374544
  22. 59737441
  23. 90003169
  24. 26896
  25. 23716
  26. 48678529
  27. 12544
  28. 478864
  29. 28224
  30. 74839801
  31. 28561
  32. 10876804
  33. 6245001
  34. 47775744
  35. 72726784
  36. 2815684
  37. 543169
  38. 87048900
  39. 69169
  40. 99225

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