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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 470 · 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. 1.966² =
  2. 2.196² =
  3. 3.7151² =
  4. 4.980² =
  5. 5.298² =
  6. 6.512² =
  7. 7.599² =
  8. 8.755² =
  9. 9.365² =
  10. 10.664² =
  11. 11.6069² =
  12. 12.668² =
  13. 13.872² =
  14. 14.502² =
  15. 15.555² =
  16. 16.813² =
  17. 17.790² =
  18. 18.8407² =
  19. 19.659² =
  20. 20.428² =
  21. 21.3098² =
  22. 22.9617² =
  23. 23.108² =
  24. 24.216² =
  25. 25.544² =
  26. 26.932² =
  27. 27.136² =
  28. 28.462² =
  29. 29.893² =
  30. 30.4517² =
  31. 31.647² =
  32. 32.4375² =
  33. 33.347² =
  34. 34.129² =
  35. 35.395² =
  36. 36.353² =
  37. 37.153² =
  38. 38.316² =
  39. 39.360² =
  40. 40.460² =

Answer key

  1. 933156
  2. 38416
  3. 51136801
  4. 960400
  5. 88804
  6. 262144
  7. 358801
  8. 570025
  9. 133225
  10. 440896
  11. 36832761
  12. 446224
  13. 760384
  14. 252004
  15. 308025
  16. 660969
  17. 624100
  18. 70677649
  19. 434281
  20. 183184
  21. 9597604
  22. 92486689
  23. 11664
  24. 46656
  25. 295936
  26. 868624
  27. 18496
  28. 213444
  29. 797449
  30. 20403289
  31. 418609
  32. 19140625
  33. 120409
  34. 16641
  35. 156025
  36. 124609
  37. 23409
  38. 99856
  39. 129600
  40. 211600

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