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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 230 · 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. 1.235² =
  2. 2.417² =
  3. 3.947² =
  4. 4.315² =
  5. 5.479² =
  6. 6.192² =
  7. 7.198² =
  8. 8.2781² =
  9. 9.248² =
  10. 10.104² =
  11. 11.993² =
  12. 12.787² =
  13. 13.6807² =
  14. 14.746² =
  15. 15.4677² =
  16. 16.2291² =
  17. 17.783² =
  18. 18.949² =
  19. 19.8420² =
  20. 20.264² =
  21. 21.121² =
  22. 22.289² =
  23. 23.318² =
  24. 24.2557² =
  25. 25.5378² =
  26. 26.785² =
  27. 27.955² =
  28. 28.179² =
  29. 29.983² =
  30. 30.382² =
  31. 31.381² =
  32. 32.196² =
  33. 33.118² =
  34. 34.7850² =
  35. 35.398² =
  36. 36.7419² =
  37. 37.669² =
  38. 38.5491² =
  39. 39.170² =
  40. 40.5792² =

Answer key

  1. 55225
  2. 173889
  3. 896809
  4. 99225
  5. 229441
  6. 36864
  7. 39204
  8. 7733961
  9. 61504
  10. 10816
  11. 986049
  12. 619369
  13. 46335249
  14. 556516
  15. 21874329
  16. 5248681
  17. 613089
  18. 900601
  19. 70896400
  20. 69696
  21. 14641
  22. 83521
  23. 101124
  24. 6538249
  25. 28922884
  26. 616225
  27. 912025
  28. 32041
  29. 966289
  30. 145924
  31. 145161
  32. 38416
  33. 13924
  34. 61622500
  35. 158404
  36. 55041561
  37. 447561
  38. 30151081
  39. 28900
  40. 33547264

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