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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 417 · 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. 1.245² =
  2. 2.5243² =
  3. 3.655² =
  4. 4.139² =
  5. 5.908² =
  6. 6.776² =
  7. 7.195² =
  8. 8.206² =
  9. 9.771² =
  10. 10.4454² =
  11. 11.838² =
  12. 12.208² =
  13. 13.257² =
  14. 14.1191² =
  15. 15.598² =
  16. 16.4296² =
  17. 17.3214² =
  18. 18.6422² =
  19. 19.166² =
  20. 20.294² =
  21. 21.143² =
  22. 22.1784² =
  23. 23.493² =
  24. 24.5281² =
  25. 25.880² =
  26. 26.6516² =
  27. 27.9561² =
  28. 28.3469² =
  29. 29.280² =
  30. 30.719² =
  31. 31.701² =
  32. 32.1804² =
  33. 33.4810² =
  34. 34.150² =
  35. 35.757² =
  36. 36.2820² =
  37. 37.689² =
  38. 38.755² =
  39. 39.319² =
  40. 40.242² =

Answer key

  1. 60025
  2. 27489049
  3. 429025
  4. 19321
  5. 824464
  6. 602176
  7. 38025
  8. 42436
  9. 594441
  10. 19838116
  11. 702244
  12. 43264
  13. 66049
  14. 1418481
  15. 357604
  16. 18455616
  17. 10329796
  18. 41242084
  19. 27556
  20. 86436
  21. 20449
  22. 3182656
  23. 243049
  24. 27888961
  25. 774400
  26. 42458256
  27. 91412721
  28. 12033961
  29. 78400
  30. 516961
  31. 491401
  32. 3254416
  33. 23136100
  34. 22500
  35. 573049
  36. 7952400
  37. 474721
  38. 570025
  39. 101761
  40. 58564

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