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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 964 · 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. 1.402² =
  2. 2.9589² =
  3. 3.820² =
  4. 4.1600² =
  5. 5.597² =
  6. 6.834² =
  7. 7.830² =
  8. 8.8731² =
  9. 9.7991² =
  10. 10.6977² =
  11. 11.429² =
  12. 12.448² =
  13. 13.389² =
  14. 14.122² =
  15. 15.280² =
  16. 16.9015² =
  17. 17.320² =
  18. 18.852² =
  19. 19.248² =
  20. 20.615² =
  21. 21.590² =
  22. 22.8942² =
  23. 23.319² =
  24. 24.456² =
  25. 25.6263² =
  26. 26.847² =
  27. 27.577² =
  28. 28.395² =
  29. 29.860² =
  30. 30.686² =
  31. 31.423² =
  32. 32.235² =
  33. 33.846² =
  34. 34.5638² =
  35. 35.226² =
  36. 36.507² =
  37. 37.2697² =
  38. 38.561² =
  39. 39.160² =
  40. 40.808² =

Answer key

  1. 161604
  2. 91948921
  3. 672400
  4. 2560000
  5. 356409
  6. 695556
  7. 688900
  8. 76230361
  9. 63856081
  10. 48678529
  11. 184041
  12. 200704
  13. 151321
  14. 14884
  15. 78400
  16. 81270225
  17. 102400
  18. 725904
  19. 61504
  20. 378225
  21. 348100
  22. 79959364
  23. 101761
  24. 207936
  25. 39225169
  26. 717409
  27. 332929
  28. 156025
  29. 739600
  30. 470596
  31. 178929
  32. 55225
  33. 715716
  34. 31787044
  35. 51076
  36. 257049
  37. 7273809
  38. 314721
  39. 25600
  40. 652864

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