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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 42 · 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. 1.152² =
  2. 2.870² =
  3. 3.231² =
  4. 4.960² =
  5. 5.1617² =
  6. 6.400² =
  7. 7.391² =
  8. 8.281² =
  9. 9.213² =
  10. 10.302² =
  11. 11.973² =
  12. 12.2928² =
  13. 13.155² =
  14. 14.387² =
  15. 15.1231² =
  16. 16.867² =
  17. 17.297² =
  18. 18.331² =
  19. 19.751² =
  20. 20.495² =
  21. 21.416² =
  22. 22.374² =
  23. 23.197² =
  24. 24.158² =
  25. 25.880² =
  26. 26.880² =
  27. 27.9351² =
  28. 28.6802² =
  29. 29.3187² =
  30. 30.815² =
  31. 31.815² =
  32. 32.999² =
  33. 33.3138² =
  34. 34.587² =
  35. 35.145² =
  36. 36.309² =
  37. 37.714² =
  38. 38.7273² =
  39. 39.604² =
  40. 40.317² =

Answer key

  1. 23104
  2. 756900
  3. 53361
  4. 921600
  5. 2614689
  6. 160000
  7. 152881
  8. 78961
  9. 45369
  10. 91204
  11. 946729
  12. 8573184
  13. 24025
  14. 149769
  15. 1515361
  16. 751689
  17. 88209
  18. 109561
  19. 564001
  20. 245025
  21. 173056
  22. 139876
  23. 38809
  24. 24964
  25. 774400
  26. 774400
  27. 87441201
  28. 46267204
  29. 10156969
  30. 664225
  31. 664225
  32. 998001
  33. 9847044
  34. 344569
  35. 21025
  36. 95481
  37. 509796
  38. 52896529
  39. 364816
  40. 100489

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