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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 489 · 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. 1.997² =
  2. 2.145² =
  3. 3.138² =
  4. 4.848² =
  5. 5.1211² =
  6. 6.1734² =
  7. 7.150² =
  8. 8.8048² =
  9. 9.247² =
  10. 10.8382² =
  11. 11.150² =
  12. 12.353² =
  13. 13.107² =
  14. 14.263² =
  15. 15.578² =
  16. 16.451² =
  17. 17.848² =
  18. 18.108² =
  19. 19.5899² =
  20. 20.7768² =
  21. 21.929² =
  22. 22.394² =
  23. 23.473² =
  24. 24.2036² =
  25. 25.635² =
  26. 26.220² =
  27. 27.114² =
  28. 28.550² =
  29. 29.314² =
  30. 30.3848² =
  31. 31.3055² =
  32. 32.527² =
  33. 33.281² =
  34. 34.613² =
  35. 35.7799² =
  36. 36.533² =
  37. 37.306² =
  38. 38.6908² =
  39. 39.768² =
  40. 40.475² =

Answer key

  1. 994009
  2. 21025
  3. 19044
  4. 719104
  5. 1466521
  6. 3006756
  7. 22500
  8. 64770304
  9. 61009
  10. 70257924
  11. 22500
  12. 124609
  13. 11449
  14. 69169
  15. 334084
  16. 203401
  17. 719104
  18. 11664
  19. 34798201
  20. 60341824
  21. 863041
  22. 155236
  23. 223729
  24. 4145296
  25. 403225
  26. 48400
  27. 12996
  28. 302500
  29. 98596
  30. 14807104
  31. 9333025
  32. 277729
  33. 78961
  34. 375769
  35. 60824401
  36. 284089
  37. 93636
  38. 47720464
  39. 589824
  40. 225625

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