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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 97 · 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. 1.597² =
  2. 2.487² =
  3. 3.204² =
  4. 4.200² =
  5. 5.570² =
  6. 6.303² =
  7. 7.147² =
  8. 8.149² =
  9. 9.232² =
  10. 10.234² =
  11. 11.506² =
  12. 12.797² =
  13. 13.912² =
  14. 14.145² =
  15. 15.6308² =
  16. 16.867² =
  17. 17.217² =
  18. 18.156² =
  19. 19.3648² =
  20. 20.539² =
  21. 21.1372² =
  22. 22.648² =
  23. 23.927² =
  24. 24.310² =
  25. 25.360² =
  26. 26.9214² =
  27. 27.584² =
  28. 28.315² =
  29. 29.368² =
  30. 30.1178² =
  31. 31.104² =
  32. 32.139² =
  33. 33.7424² =
  34. 34.238² =
  35. 35.918² =
  36. 36.6677² =
  37. 37.773² =
  38. 38.735² =
  39. 39.164² =
  40. 40.640² =

Answer key

  1. 356409
  2. 237169
  3. 41616
  4. 40000
  5. 324900
  6. 91809
  7. 21609
  8. 22201
  9. 53824
  10. 54756
  11. 256036
  12. 635209
  13. 831744
  14. 21025
  15. 39790864
  16. 751689
  17. 47089
  18. 24336
  19. 13307904
  20. 290521
  21. 1882384
  22. 419904
  23. 859329
  24. 96100
  25. 129600
  26. 84897796
  27. 341056
  28. 99225
  29. 135424
  30. 1387684
  31. 10816
  32. 19321
  33. 55115776
  34. 56644
  35. 842724
  36. 44582329
  37. 597529
  38. 540225
  39. 26896
  40. 409600

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