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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 907 · 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. 1.646² =
  2. 2.908² =
  3. 3.463² =
  4. 4.559² =
  5. 5.184² =
  6. 6.682² =
  7. 7.3298² =
  8. 8.228² =
  9. 9.221² =
  10. 10.391² =
  11. 11.2607² =
  12. 12.274² =
  13. 13.1368² =
  14. 14.234² =
  15. 15.7514² =
  16. 16.209² =
  17. 17.5737² =
  18. 18.348² =
  19. 19.334² =
  20. 20.977² =
  21. 21.8176² =
  22. 22.503² =
  23. 23.821² =
  24. 24.132² =
  25. 25.3614² =
  26. 26.306² =
  27. 27.999² =
  28. 28.4743² =
  29. 29.611² =
  30. 30.107² =
  31. 31.706² =
  32. 32.161² =
  33. 33.566² =
  34. 34.207² =
  35. 35.749² =
  36. 36.552² =
  37. 37.2365² =
  38. 38.138² =
  39. 39.825² =
  40. 40.2105² =

Answer key

  1. 417316
  2. 824464
  3. 214369
  4. 312481
  5. 33856
  6. 465124
  7. 10876804
  8. 51984
  9. 48841
  10. 152881
  11. 6796449
  12. 75076
  13. 1871424
  14. 54756
  15. 56460196
  16. 43681
  17. 32913169
  18. 121104
  19. 111556
  20. 954529
  21. 66846976
  22. 253009
  23. 674041
  24. 17424
  25. 13060996
  26. 93636
  27. 998001
  28. 22496049
  29. 373321
  30. 11449
  31. 498436
  32. 25921
  33. 320356
  34. 42849
  35. 561001
  36. 304704
  37. 5593225
  38. 19044
  39. 680625
  40. 4431025

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