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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 37 · 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. 1.9402² =
  2. 2.579² =
  3. 3.162² =
  4. 4.728² =
  5. 5.343² =
  6. 6.745² =
  7. 7.346² =
  8. 8.445² =
  9. 9.2122² =
  10. 10.685² =
  11. 11.985² =
  12. 12.337² =
  13. 13.2424² =
  14. 14.361² =
  15. 15.4057² =
  16. 16.145² =
  17. 17.2431² =
  18. 18.7982² =
  19. 19.6630² =
  20. 20.866² =
  21. 21.649² =
  22. 22.250² =
  23. 23.655² =
  24. 24.3249² =
  25. 25.248² =
  26. 26.609² =
  27. 27.111² =
  28. 28.867² =
  29. 29.741² =
  30. 30.206² =
  31. 31.994² =
  32. 32.2096² =
  33. 33.384² =
  34. 34.416² =
  35. 35.517² =
  36. 36.114² =
  37. 37.8915² =
  38. 38.780² =
  39. 39.2335² =
  40. 40.2762² =

Answer key

  1. 88397604
  2. 335241
  3. 26244
  4. 529984
  5. 117649
  6. 555025
  7. 119716
  8. 198025
  9. 4502884
  10. 469225
  11. 970225
  12. 113569
  13. 5875776
  14. 130321
  15. 16459249
  16. 21025
  17. 5909761
  18. 63712324
  19. 43956900
  20. 749956
  21. 421201
  22. 62500
  23. 429025
  24. 10556001
  25. 61504
  26. 370881
  27. 12321
  28. 751689
  29. 549081
  30. 42436
  31. 988036
  32. 4393216
  33. 147456
  34. 173056
  35. 267289
  36. 12996
  37. 79477225
  38. 608400
  39. 5452225
  40. 7628644

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