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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 32 · 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. 1.4662² =
  2. 2.364² =
  3. 3.2333² =
  4. 4.841² =
  5. 5.502² =
  6. 6.404² =
  7. 7.649² =
  8. 8.743² =
  9. 9.466² =
  10. 10.325² =
  11. 11.345² =
  12. 12.810² =
  13. 13.9142² =
  14. 14.398² =
  15. 15.962² =
  16. 16.9526² =
  17. 17.8436² =
  18. 18.982² =
  19. 19.170² =
  20. 20.928² =
  21. 21.1215² =
  22. 22.4373² =
  23. 23.612² =
  24. 24.916² =
  25. 25.505² =
  26. 26.1330² =
  27. 27.515² =
  28. 28.1925² =
  29. 29.901² =
  30. 30.229² =
  31. 31.816² =
  32. 32.360² =
  33. 33.635² =
  34. 34.366² =
  35. 35.228² =
  36. 36.204² =
  37. 37.243² =
  38. 38.223² =
  39. 39.767² =
  40. 40.710² =

Answer key

  1. 21734244
  2. 132496
  3. 5442889
  4. 707281
  5. 252004
  6. 163216
  7. 421201
  8. 552049
  9. 217156
  10. 105625
  11. 119025
  12. 656100
  13. 83576164
  14. 158404
  15. 925444
  16. 90744676
  17. 71166096
  18. 964324
  19. 28900
  20. 861184
  21. 1476225
  22. 19123129
  23. 374544
  24. 839056
  25. 255025
  26. 1768900
  27. 265225
  28. 3705625
  29. 811801
  30. 52441
  31. 665856
  32. 129600
  33. 403225
  34. 133956
  35. 51984
  36. 41616
  37. 59049
  38. 49729
  39. 588289
  40. 504100

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