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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 867 · 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. 1.353² =
  2. 2.856² =
  3. 3.541² =
  4. 4.249² =
  5. 5.984² =
  6. 6.649² =
  7. 7.330² =
  8. 8.344² =
  9. 9.261² =
  10. 10.821² =
  11. 11.805² =
  12. 12.455² =
  13. 13.391² =
  14. 14.270² =
  15. 15.3791² =
  16. 16.124² =
  17. 17.157² =
  18. 18.938² =
  19. 19.401² =
  20. 20.354² =
  21. 21.8844² =
  22. 22.212² =
  23. 23.400² =
  24. 24.746² =
  25. 25.544² =
  26. 26.476² =
  27. 27.178² =
  28. 28.5303² =
  29. 29.104² =
  30. 30.7864² =
  31. 31.275² =
  32. 32.965² =
  33. 33.5236² =
  34. 34.544² =
  35. 35.697² =
  36. 36.903² =
  37. 37.133² =
  38. 38.7867² =
  39. 39.253² =
  40. 40.126² =

Answer key

  1. 124609
  2. 732736
  3. 292681
  4. 62001
  5. 968256
  6. 421201
  7. 108900
  8. 118336
  9. 68121
  10. 674041
  11. 648025
  12. 207025
  13. 152881
  14. 72900
  15. 14371681
  16. 15376
  17. 24649
  18. 879844
  19. 160801
  20. 125316
  21. 78216336
  22. 44944
  23. 160000
  24. 556516
  25. 295936
  26. 226576
  27. 31684
  28. 28121809
  29. 10816
  30. 61842496
  31. 75625
  32. 931225
  33. 27415696
  34. 295936
  35. 485809
  36. 815409
  37. 17689
  38. 61889689
  39. 64009
  40. 15876

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