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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 740 · 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. 1.665² =
  2. 2.361² =
  3. 3.771² =
  4. 4.601² =
  5. 5.226² =
  6. 6.894² =
  7. 7.8739² =
  8. 8.126² =
  9. 9.461² =
  10. 10.607² =
  11. 11.405² =
  12. 12.373² =
  13. 13.9059² =
  14. 14.274² =
  15. 15.419² =
  16. 16.539² =
  17. 17.943² =
  18. 18.925² =
  19. 19.149² =
  20. 20.104² =
  21. 21.685² =
  22. 22.8369² =
  23. 23.102² =
  24. 24.686² =
  25. 25.780² =
  26. 26.111² =
  27. 27.2239² =
  28. 28.804² =
  29. 29.621² =
  30. 30.1248² =
  31. 31.113² =
  32. 32.312² =
  33. 33.194² =
  34. 34.175² =
  35. 35.287² =
  36. 36.342² =
  37. 37.3471² =
  38. 38.604² =
  39. 39.919² =
  40. 40.826² =

Answer key

  1. 442225
  2. 130321
  3. 594441
  4. 361201
  5. 51076
  6. 799236
  7. 76370121
  8. 15876
  9. 212521
  10. 368449
  11. 164025
  12. 139129
  13. 82065481
  14. 75076
  15. 175561
  16. 290521
  17. 889249
  18. 855625
  19. 22201
  20. 10816
  21. 469225
  22. 70040161
  23. 10404
  24. 470596
  25. 608400
  26. 12321
  27. 5013121
  28. 646416
  29. 385641
  30. 1557504
  31. 12769
  32. 97344
  33. 37636
  34. 30625
  35. 82369
  36. 116964
  37. 12047841
  38. 364816
  39. 844561
  40. 682276

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