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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 604 · 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. 1.5629² =
  2. 2.809² =
  3. 3.3996² =
  4. 4.334² =
  5. 5.2446² =
  6. 6.337² =
  7. 7.661² =
  8. 8.212² =
  9. 9.7324² =
  10. 10.3226² =
  11. 11.178² =
  12. 12.8471² =
  13. 13.460² =
  14. 14.849² =
  15. 15.979² =
  16. 16.439² =
  17. 17.373² =
  18. 18.780² =
  19. 19.749² =
  20. 20.623² =
  21. 21.765² =
  22. 22.2384² =
  23. 23.996² =
  24. 24.629² =
  25. 25.3726² =
  26. 26.802² =
  27. 27.489² =
  28. 28.8216² =
  29. 29.7415² =
  30. 30.2231² =
  31. 31.3297² =
  32. 32.238² =
  33. 33.339² =
  34. 34.168² =
  35. 35.3353² =
  36. 36.268² =
  37. 37.2610² =
  38. 38.361² =
  39. 39.312² =
  40. 40.4195² =

Answer key

  1. 31685641
  2. 654481
  3. 15968016
  4. 111556
  5. 5982916
  6. 113569
  7. 436921
  8. 44944
  9. 53640976
  10. 10407076
  11. 31684
  12. 71757841
  13. 211600
  14. 720801
  15. 958441
  16. 192721
  17. 139129
  18. 608400
  19. 561001
  20. 388129
  21. 585225
  22. 5683456
  23. 992016
  24. 395641
  25. 13883076
  26. 643204
  27. 239121
  28. 67502656
  29. 54982225
  30. 4977361
  31. 10870209
  32. 56644
  33. 114921
  34. 28224
  35. 11242609
  36. 71824
  37. 6812100
  38. 130321
  39. 97344
  40. 17598025

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