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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 179 · 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. 1.374² =
  2. 2.965² =
  3. 3.1604² =
  4. 4.2800² =
  5. 5.306² =
  6. 6.6553² =
  7. 7.330² =
  8. 8.927² =
  9. 9.160² =
  10. 10.1516² =
  11. 11.798² =
  12. 12.9395² =
  13. 13.595² =
  14. 14.377² =
  15. 15.4037² =
  16. 16.185² =
  17. 17.106² =
  18. 18.591² =
  19. 19.149² =
  20. 20.5805² =
  21. 21.7535² =
  22. 22.955² =
  23. 23.2585² =
  24. 24.7673² =
  25. 25.115² =
  26. 26.320² =
  27. 27.221² =
  28. 28.232² =
  29. 29.721² =
  30. 30.908² =
  31. 31.1527² =
  32. 32.5179² =
  33. 33.1263² =
  34. 34.413² =
  35. 35.3007² =
  36. 36.285² =
  37. 37.658² =
  38. 38.202² =
  39. 39.908² =
  40. 40.2151² =

Answer key

  1. 139876
  2. 931225
  3. 2572816
  4. 7840000
  5. 93636
  6. 42941809
  7. 108900
  8. 859329
  9. 25600
  10. 2298256
  11. 636804
  12. 88266025
  13. 354025
  14. 142129
  15. 16297369
  16. 34225
  17. 11236
  18. 349281
  19. 22201
  20. 33698025
  21. 56776225
  22. 912025
  23. 6682225
  24. 58874929
  25. 13225
  26. 102400
  27. 48841
  28. 53824
  29. 519841
  30. 824464
  31. 2331729
  32. 26822041
  33. 1595169
  34. 170569
  35. 9042049
  36. 81225
  37. 432964
  38. 40804
  39. 824464
  40. 4626801

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