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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 724 · 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. 1.231² =
  2. 2.344² =
  3. 3.673² =
  4. 4.149² =
  5. 5.380² =
  6. 6.9249² =
  7. 7.681² =
  8. 8.551² =
  9. 9.666² =
  10. 10.390² =
  11. 11.7921² =
  12. 12.883² =
  13. 13.237² =
  14. 14.828² =
  15. 15.297² =
  16. 16.734² =
  17. 17.3284² =
  18. 18.4669² =
  19. 19.580² =
  20. 20.156² =
  21. 21.170² =
  22. 22.884² =
  23. 23.844² =
  24. 24.571² =
  25. 25.7084² =
  26. 26.474² =
  27. 27.521² =
  28. 28.488² =
  29. 29.5942² =
  30. 30.137² =
  31. 31.972² =
  32. 32.156² =
  33. 33.5865² =
  34. 34.7369² =
  35. 35.3926² =
  36. 36.2369² =
  37. 37.121² =
  38. 38.509² =
  39. 39.8410² =
  40. 40.5654² =

Answer key

  1. 53361
  2. 118336
  3. 452929
  4. 22201
  5. 144400
  6. 85544001
  7. 463761
  8. 303601
  9. 443556
  10. 152100
  11. 62742241
  12. 779689
  13. 56169
  14. 685584
  15. 88209
  16. 538756
  17. 10784656
  18. 21799561
  19. 336400
  20. 24336
  21. 28900
  22. 781456
  23. 712336
  24. 326041
  25. 50183056
  26. 224676
  27. 271441
  28. 238144
  29. 35307364
  30. 18769
  31. 944784
  32. 24336
  33. 34398225
  34. 54302161
  35. 15413476
  36. 5612161
  37. 14641
  38. 259081
  39. 70728100
  40. 31967716

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