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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 926 · 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. 1.7450² =
  2. 2.130² =
  3. 3.294² =
  4. 4.2452² =
  5. 5.831² =
  6. 6.406² =
  7. 7.566² =
  8. 8.604² =
  9. 9.974² =
  10. 10.973² =
  11. 11.419² =
  12. 12.5337² =
  13. 13.9039² =
  14. 14.318² =
  15. 15.910² =
  16. 16.3263² =
  17. 17.954² =
  18. 18.638² =
  19. 19.5147² =
  20. 20.749² =
  21. 21.664² =
  22. 22.483² =
  23. 23.246² =
  24. 24.431² =
  25. 25.889² =
  26. 26.108² =
  27. 27.782² =
  28. 28.7871² =
  29. 29.394² =
  30. 30.531² =
  31. 31.681² =
  32. 32.6046² =
  33. 33.1441² =
  34. 34.584² =
  35. 35.157² =
  36. 36.5195² =
  37. 37.108² =
  38. 38.587² =
  39. 39.817² =
  40. 40.4376² =

Answer key

  1. 55502500
  2. 16900
  3. 86436
  4. 6012304
  5. 690561
  6. 164836
  7. 320356
  8. 364816
  9. 948676
  10. 946729
  11. 175561
  12. 28483569
  13. 81703521
  14. 101124
  15. 828100
  16. 10647169
  17. 910116
  18. 407044
  19. 26491609
  20. 561001
  21. 440896
  22. 233289
  23. 60516
  24. 185761
  25. 790321
  26. 11664
  27. 611524
  28. 61952641
  29. 155236
  30. 281961
  31. 463761
  32. 36554116
  33. 2076481
  34. 341056
  35. 24649
  36. 26988025
  37. 11664
  38. 344569
  39. 667489
  40. 19149376

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