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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 101 · 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. 1.879² =
  2. 2.556² =
  3. 3.177² =
  4. 4.830² =
  5. 5.188² =
  6. 6.491² =
  7. 7.7793² =
  8. 8.545² =
  9. 9.746² =
  10. 10.150² =
  11. 11.924² =
  12. 12.6995² =
  13. 13.598² =
  14. 14.290² =
  15. 15.488² =
  16. 16.526² =
  17. 17.732² =
  18. 18.123² =
  19. 19.4083² =
  20. 20.202² =
  21. 21.645² =
  22. 22.117² =
  23. 23.785² =
  24. 24.774² =
  25. 25.285² =
  26. 26.868² =
  27. 27.937² =
  28. 28.635² =
  29. 29.279² =
  30. 30.139² =
  31. 31.686² =
  32. 32.788² =
  33. 33.7346² =
  34. 34.602² =
  35. 35.2341² =
  36. 36.406² =
  37. 37.941² =
  38. 38.362² =
  39. 39.151² =
  40. 40.216² =

Answer key

  1. 772641
  2. 309136
  3. 31329
  4. 688900
  5. 35344
  6. 241081
  7. 60730849
  8. 297025
  9. 556516
  10. 22500
  11. 853776
  12. 48930025
  13. 357604
  14. 84100
  15. 238144
  16. 276676
  17. 535824
  18. 15129
  19. 16670889
  20. 40804
  21. 416025
  22. 13689
  23. 616225
  24. 599076
  25. 81225
  26. 753424
  27. 877969
  28. 403225
  29. 77841
  30. 19321
  31. 470596
  32. 620944
  33. 53963716
  34. 362404
  35. 5480281
  36. 164836
  37. 885481
  38. 131044
  39. 22801
  40. 46656

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