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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 162 · 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. 1.650² =
  2. 2.371² =
  3. 3.916² =
  4. 4.226² =
  5. 5.116² =
  6. 6.598² =
  7. 7.111² =
  8. 8.656² =
  9. 9.1535² =
  10. 10.719² =
  11. 11.1176² =
  12. 12.2716² =
  13. 13.870² =
  14. 14.638² =
  15. 15.9260² =
  16. 16.297² =
  17. 17.466² =
  18. 18.919² =
  19. 19.433² =
  20. 20.527² =
  21. 21.787² =
  22. 22.3427² =
  23. 23.679² =
  24. 24.231² =
  25. 25.709² =
  26. 26.558² =
  27. 27.782² =
  28. 28.771² =
  29. 29.1762² =
  30. 30.9092² =
  31. 31.2340² =
  32. 32.683² =
  33. 33.610² =
  34. 34.166² =
  35. 35.957² =
  36. 36.135² =
  37. 37.864² =
  38. 38.883² =
  39. 39.906² =
  40. 40.532² =

Answer key

  1. 422500
  2. 137641
  3. 839056
  4. 51076
  5. 13456
  6. 357604
  7. 12321
  8. 430336
  9. 2356225
  10. 516961
  11. 1382976
  12. 7376656
  13. 756900
  14. 407044
  15. 85747600
  16. 88209
  17. 217156
  18. 844561
  19. 187489
  20. 277729
  21. 619369
  22. 11744329
  23. 461041
  24. 53361
  25. 502681
  26. 311364
  27. 611524
  28. 594441
  29. 3104644
  30. 82664464
  31. 5475600
  32. 466489
  33. 372100
  34. 27556
  35. 915849
  36. 18225
  37. 746496
  38. 779689
  39. 820836
  40. 283024

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