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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 818 · 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. 1.296² =
  2. 2.861² =
  3. 3.706² =
  4. 4.351² =
  5. 5.319² =
  6. 6.231² =
  7. 7.816² =
  8. 8.161² =
  9. 9.8483² =
  10. 10.905² =
  11. 11.983² =
  12. 12.500² =
  13. 13.297² =
  14. 14.287² =
  15. 15.436² =
  16. 16.734² =
  17. 17.623² =
  18. 18.4839² =
  19. 19.858² =
  20. 20.559² =
  21. 21.442² =
  22. 22.396² =
  23. 23.1834² =
  24. 24.299² =
  25. 25.366² =
  26. 26.873² =
  27. 27.663² =
  28. 28.395² =
  29. 29.107² =
  30. 30.746² =
  31. 31.975² =
  32. 32.390² =
  33. 33.966² =
  34. 34.4572² =
  35. 35.224² =
  36. 36.363² =
  37. 37.2502² =
  38. 38.4272² =
  39. 39.564² =
  40. 40.900² =

Answer key

  1. 87616
  2. 741321
  3. 498436
  4. 123201
  5. 101761
  6. 53361
  7. 665856
  8. 25921
  9. 71961289
  10. 819025
  11. 966289
  12. 250000
  13. 88209
  14. 82369
  15. 190096
  16. 538756
  17. 388129
  18. 23415921
  19. 736164
  20. 312481
  21. 195364
  22. 156816
  23. 3363556
  24. 89401
  25. 133956
  26. 762129
  27. 439569
  28. 156025
  29. 11449
  30. 556516
  31. 950625
  32. 152100
  33. 933156
  34. 20903184
  35. 50176
  36. 131769
  37. 6260004
  38. 18249984
  39. 318096
  40. 810000

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