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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 874 · 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. 1.6565² =
  2. 2.993² =
  3. 3.305² =
  4. 4.242² =
  5. 5.980² =
  6. 6.952² =
  7. 7.342² =
  8. 8.366² =
  9. 9.198² =
  10. 10.286² =
  11. 11.602² =
  12. 12.254² =
  13. 13.191² =
  14. 14.830² =
  15. 15.925² =
  16. 16.6502² =
  17. 17.5567² =
  18. 18.372² =
  19. 19.111² =
  20. 20.681² =
  21. 21.169² =
  22. 22.641² =
  23. 23.899² =
  24. 24.896² =
  25. 25.130² =
  26. 26.807² =
  27. 27.2810² =
  28. 28.321² =
  29. 29.733² =
  30. 30.3459² =
  31. 31.562² =
  32. 32.741² =
  33. 33.944² =
  34. 34.1579² =
  35. 35.476² =
  36. 36.573² =
  37. 37.4764² =
  38. 38.121² =
  39. 39.2645² =
  40. 40.146² =

Answer key

  1. 43099225
  2. 986049
  3. 93025
  4. 58564
  5. 960400
  6. 906304
  7. 116964
  8. 133956
  9. 39204
  10. 81796
  11. 362404
  12. 64516
  13. 36481
  14. 688900
  15. 855625
  16. 42276004
  17. 30991489
  18. 138384
  19. 12321
  20. 463761
  21. 28561
  22. 410881
  23. 808201
  24. 802816
  25. 16900
  26. 651249
  27. 7896100
  28. 103041
  29. 537289
  30. 11964681
  31. 315844
  32. 549081
  33. 891136
  34. 2493241
  35. 226576
  36. 328329
  37. 22695696
  38. 14641
  39. 6996025
  40. 21316

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