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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 648 · 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. 1.246² =
  2. 2.183² =
  3. 3.647² =
  4. 4.437² =
  5. 5.666² =
  6. 6.6586² =
  7. 7.2826² =
  8. 8.4253² =
  9. 9.8111² =
  10. 10.560² =
  11. 11.7268² =
  12. 12.570² =
  13. 13.396² =
  14. 14.847² =
  15. 15.6673² =
  16. 16.950² =
  17. 17.112² =
  18. 18.927² =
  19. 19.283² =
  20. 20.283² =
  21. 21.1430² =
  22. 22.249² =
  23. 23.357² =
  24. 24.7017² =
  25. 25.831² =
  26. 26.448² =
  27. 27.7960² =
  28. 28.139² =
  29. 29.131² =
  30. 30.322² =
  31. 31.461² =
  32. 32.833² =
  33. 33.214² =
  34. 34.7699² =
  35. 35.2453² =
  36. 36.999² =
  37. 37.3525² =
  38. 38.966² =
  39. 39.920² =
  40. 40.720² =

Answer key

  1. 60516
  2. 33489
  3. 418609
  4. 190969
  5. 443556
  6. 43375396
  7. 7986276
  8. 18088009
  9. 65788321
  10. 313600
  11. 52823824
  12. 324900
  13. 156816
  14. 717409
  15. 44528929
  16. 902500
  17. 12544
  18. 859329
  19. 80089
  20. 80089
  21. 2044900
  22. 62001
  23. 127449
  24. 49238289
  25. 690561
  26. 200704
  27. 63361600
  28. 19321
  29. 17161
  30. 103684
  31. 212521
  32. 693889
  33. 45796
  34. 59274601
  35. 6017209
  36. 998001
  37. 12425625
  38. 933156
  39. 846400
  40. 518400

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