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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 755 · 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. 1.145² =
  2. 2.864² =
  3. 3.876² =
  4. 4.575² =
  5. 5.695² =
  6. 6.6074² =
  7. 7.340² =
  8. 8.1771² =
  9. 9.967² =
  10. 10.918² =
  11. 11.654² =
  12. 12.833² =
  13. 13.927² =
  14. 14.679² =
  15. 15.5378² =
  16. 16.737² =
  17. 17.488² =
  18. 18.285² =
  19. 19.578² =
  20. 20.8092² =
  21. 21.195² =
  22. 22.505² =
  23. 23.782² =
  24. 24.707² =
  25. 25.2934² =
  26. 26.9433² =
  27. 27.562² =
  28. 28.624² =
  29. 29.622² =
  30. 30.384² =
  31. 31.638² =
  32. 32.8995² =
  33. 33.223² =
  34. 34.9603² =
  35. 35.218² =
  36. 36.388² =
  37. 37.379² =
  38. 38.954² =
  39. 39.260² =
  40. 40.441² =

Answer key

  1. 21025
  2. 746496
  3. 767376
  4. 330625
  5. 483025
  6. 36893476
  7. 115600
  8. 3136441
  9. 935089
  10. 842724
  11. 427716
  12. 693889
  13. 859329
  14. 461041
  15. 28922884
  16. 543169
  17. 238144
  18. 81225
  19. 334084
  20. 65480464
  21. 38025
  22. 255025
  23. 611524
  24. 499849
  25. 8608356
  26. 88981489
  27. 315844
  28. 389376
  29. 386884
  30. 147456
  31. 407044
  32. 80910025
  33. 49729
  34. 92217609
  35. 47524
  36. 150544
  37. 143641
  38. 910116
  39. 67600
  40. 194481

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