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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 582 · 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. 1.489² =
  2. 2.417² =
  3. 3.315² =
  4. 4.7340² =
  5. 5.1310² =
  6. 6.4068² =
  7. 7.1396² =
  8. 8.8797² =
  9. 9.520² =
  10. 10.951² =
  11. 11.818² =
  12. 12.950² =
  13. 13.3138² =
  14. 14.390² =
  15. 15.420² =
  16. 16.363² =
  17. 17.1976² =
  18. 18.599² =
  19. 19.716² =
  20. 20.6240² =
  21. 21.320² =
  22. 22.627² =
  23. 23.6957² =
  24. 24.220² =
  25. 25.149² =
  26. 26.964² =
  27. 27.681² =
  28. 28.710² =
  29. 29.714² =
  30. 30.255² =
  31. 31.214² =
  32. 32.472² =
  33. 33.4043² =
  34. 34.113² =
  35. 35.784² =
  36. 36.345² =
  37. 37.521² =
  38. 38.395² =
  39. 39.950² =
  40. 40.355² =

Answer key

  1. 239121
  2. 173889
  3. 99225
  4. 53875600
  5. 1716100
  6. 16548624
  7. 1948816
  8. 77387209
  9. 270400
  10. 904401
  11. 669124
  12. 902500
  13. 9847044
  14. 152100
  15. 176400
  16. 131769
  17. 3904576
  18. 358801
  19. 512656
  20. 38937600
  21. 102400
  22. 393129
  23. 48399849
  24. 48400
  25. 22201
  26. 929296
  27. 463761
  28. 504100
  29. 509796
  30. 65025
  31. 45796
  32. 222784
  33. 16345849
  34. 12769
  35. 614656
  36. 119025
  37. 271441
  38. 156025
  39. 902500
  40. 126025

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