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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 652 · 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. 1.990² =
  2. 2.215² =
  3. 3.294² =
  4. 4.711² =
  5. 5.713² =
  6. 6.116² =
  7. 7.574² =
  8. 8.518² =
  9. 9.592² =
  10. 10.313² =
  11. 11.6736² =
  12. 12.571² =
  13. 13.614² =
  14. 14.722² =
  15. 15.991² =
  16. 16.877² =
  17. 17.768² =
  18. 18.111² =
  19. 19.556² =
  20. 20.1796² =
  21. 21.744² =
  22. 22.829² =
  23. 23.619² =
  24. 24.443² =
  25. 25.598² =
  26. 26.600² =
  27. 27.8482² =
  28. 28.944² =
  29. 29.574² =
  30. 30.9896² =
  31. 31.5458² =
  32. 32.709² =
  33. 33.329² =
  34. 34.3069² =
  35. 35.455² =
  36. 36.305² =
  37. 37.611² =
  38. 38.629² =
  39. 39.722² =
  40. 40.408² =

Answer key

  1. 980100
  2. 46225
  3. 86436
  4. 505521
  5. 508369
  6. 13456
  7. 329476
  8. 268324
  9. 350464
  10. 97969
  11. 45373696
  12. 326041
  13. 376996
  14. 521284
  15. 982081
  16. 769129
  17. 589824
  18. 12321
  19. 309136
  20. 3225616
  21. 553536
  22. 687241
  23. 383161
  24. 196249
  25. 357604
  26. 360000
  27. 71944324
  28. 891136
  29. 329476
  30. 97930816
  31. 29789764
  32. 502681
  33. 108241
  34. 9418761
  35. 207025
  36. 93025
  37. 373321
  38. 395641
  39. 521284
  40. 166464

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