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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 521 · 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. 1.581² =
  2. 2.7783² =
  3. 3.150² =
  4. 4.456² =
  5. 5.650² =
  6. 6.149² =
  7. 7.797² =
  8. 8.8980² =
  9. 9.290² =
  10. 10.112² =
  11. 11.155² =
  12. 12.752² =
  13. 13.211² =
  14. 14.490² =
  15. 15.398² =
  16. 16.595² =
  17. 17.129² =
  18. 18.907² =
  19. 19.550² =
  20. 20.9505² =
  21. 21.173² =
  22. 22.6443² =
  23. 23.316² =
  24. 24.570² =
  25. 25.5357² =
  26. 26.774² =
  27. 27.9865² =
  28. 28.231² =
  29. 29.338² =
  30. 30.1879² =
  31. 31.238² =
  32. 32.998² =
  33. 33.887² =
  34. 34.1001² =
  35. 35.2116² =
  36. 36.964² =
  37. 37.497² =
  38. 38.914² =
  39. 39.6964² =
  40. 40.8195² =

Answer key

  1. 337561
  2. 60575089
  3. 22500
  4. 207936
  5. 422500
  6. 22201
  7. 635209
  8. 80640400
  9. 84100
  10. 12544
  11. 24025
  12. 565504
  13. 44521
  14. 240100
  15. 158404
  16. 354025
  17. 16641
  18. 822649
  19. 302500
  20. 90345025
  21. 29929
  22. 41512249
  23. 99856
  24. 324900
  25. 28697449
  26. 599076
  27. 97318225
  28. 53361
  29. 114244
  30. 3530641
  31. 56644
  32. 996004
  33. 786769
  34. 1002001
  35. 4477456
  36. 929296
  37. 247009
  38. 835396
  39. 48497296
  40. 67158025

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