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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 736 · 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. 1.741² =
  2. 2.1319² =
  3. 3.533² =
  4. 4.128² =
  5. 5.663² =
  6. 6.300² =
  7. 7.555² =
  8. 8.180² =
  9. 9.326² =
  10. 10.415² =
  11. 11.612² =
  12. 12.525² =
  13. 13.862² =
  14. 14.9908² =
  15. 15.307² =
  16. 16.4443² =
  17. 17.620² =
  18. 18.493² =
  19. 19.377² =
  20. 20.281² =
  21. 21.8547² =
  22. 22.4789² =
  23. 23.205² =
  24. 24.836² =
  25. 25.498² =
  26. 26.5102² =
  27. 27.240² =
  28. 28.350² =
  29. 29.1324² =
  30. 30.443² =
  31. 31.371² =
  32. 32.547² =
  33. 33.174² =
  34. 34.657² =
  35. 35.358² =
  36. 36.740² =
  37. 37.213² =
  38. 38.985² =
  39. 39.415² =
  40. 40.4702² =

Answer key

  1. 549081
  2. 1739761
  3. 284089
  4. 16384
  5. 439569
  6. 90000
  7. 308025
  8. 32400
  9. 106276
  10. 172225
  11. 374544
  12. 275625
  13. 743044
  14. 98168464
  15. 94249
  16. 19740249
  17. 384400
  18. 243049
  19. 142129
  20. 78961
  21. 73051209
  22. 22934521
  23. 42025
  24. 698896
  25. 248004
  26. 26030404
  27. 57600
  28. 122500
  29. 1752976
  30. 196249
  31. 137641
  32. 299209
  33. 30276
  34. 431649
  35. 128164
  36. 547600
  37. 45369
  38. 970225
  39. 172225
  40. 22108804

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