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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 994 · 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. 1.248² =
  2. 2.955² =
  3. 3.2149² =
  4. 4.681² =
  5. 5.959² =
  6. 6.120² =
  7. 7.444² =
  8. 8.211² =
  9. 9.795² =
  10. 10.7350² =
  11. 11.2182² =
  12. 12.8551² =
  13. 13.308² =
  14. 14.977² =
  15. 15.910² =
  16. 16.182² =
  17. 17.829² =
  18. 18.8971² =
  19. 19.124² =
  20. 20.8510² =
  21. 21.546² =
  22. 22.326² =
  23. 23.631² =
  24. 24.9590² =
  25. 25.549² =
  26. 26.967² =
  27. 27.343² =
  28. 28.5449² =
  29. 29.4119² =
  30. 30.9283² =
  31. 31.940² =
  32. 32.479² =
  33. 33.261² =
  34. 34.2338² =
  35. 35.409² =
  36. 36.2987² =
  37. 37.9424² =
  38. 38.708² =
  39. 39.168² =
  40. 40.187² =

Answer key

  1. 61504
  2. 912025
  3. 4618201
  4. 463761
  5. 919681
  6. 14400
  7. 197136
  8. 44521
  9. 632025
  10. 54022500
  11. 4761124
  12. 73119601
  13. 94864
  14. 954529
  15. 828100
  16. 33124
  17. 687241
  18. 80478841
  19. 15376
  20. 72420100
  21. 298116
  22. 106276
  23. 398161
  24. 91968100
  25. 301401
  26. 935089
  27. 117649
  28. 29691601
  29. 16966161
  30. 86174089
  31. 883600
  32. 229441
  33. 68121
  34. 5466244
  35. 167281
  36. 8922169
  37. 88811776
  38. 501264
  39. 28224
  40. 34969

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