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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 23 · 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. 1.2678² =
  2. 2.452² =
  3. 3.994² =
  4. 4.940² =
  5. 5.680² =
  6. 6.207² =
  7. 7.731² =
  8. 8.352² =
  9. 9.829² =
  10. 10.156² =
  11. 11.505² =
  12. 12.948² =
  13. 13.686² =
  14. 14.2417² =
  15. 15.501² =
  16. 16.312² =
  17. 17.446² =
  18. 18.959² =
  19. 19.959² =
  20. 20.2004² =
  21. 21.483² =
  22. 22.901² =
  23. 23.7499² =
  24. 24.818² =
  25. 25.7458² =
  26. 26.930² =
  27. 27.744² =
  28. 28.519² =
  29. 29.9555² =
  30. 30.869² =
  31. 31.291² =
  32. 32.851² =
  33. 33.405² =
  34. 34.587² =
  35. 35.904² =
  36. 36.9036² =
  37. 37.924² =
  38. 38.593² =
  39. 39.163² =
  40. 40.464² =

Answer key

  1. 7171684
  2. 204304
  3. 988036
  4. 883600
  5. 462400
  6. 42849
  7. 534361
  8. 123904
  9. 687241
  10. 24336
  11. 255025
  12. 898704
  13. 470596
  14. 5841889
  15. 251001
  16. 97344
  17. 198916
  18. 919681
  19. 919681
  20. 4016016
  21. 233289
  22. 811801
  23. 56235001
  24. 669124
  25. 55621764
  26. 864900
  27. 553536
  28. 269361
  29. 91298025
  30. 755161
  31. 84681
  32. 724201
  33. 164025
  34. 344569
  35. 817216
  36. 81649296
  37. 853776
  38. 351649
  39. 26569
  40. 215296

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