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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 74 · 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. 1.559² =
  2. 2.228² =
  3. 3.5475² =
  4. 4.200² =
  5. 5.587² =
  6. 6.639² =
  7. 7.1804² =
  8. 8.805² =
  9. 9.9522² =
  10. 10.5790² =
  11. 11.134² =
  12. 12.350² =
  13. 13.777² =
  14. 14.623² =
  15. 15.456² =
  16. 16.158² =
  17. 17.496² =
  18. 18.6076² =
  19. 19.165² =
  20. 20.4451² =
  21. 21.389² =
  22. 22.120² =
  23. 23.386² =
  24. 24.4454² =
  25. 25.7697² =
  26. 26.737² =
  27. 27.516² =
  28. 28.701² =
  29. 29.5402² =
  30. 30.579² =
  31. 31.4662² =
  32. 32.1202² =
  33. 33.446² =
  34. 34.4504² =
  35. 35.270² =
  36. 36.3705² =
  37. 37.564² =
  38. 38.205² =
  39. 39.247² =
  40. 40.695² =

Answer key

  1. 312481
  2. 51984
  3. 29975625
  4. 40000
  5. 344569
  6. 408321
  7. 3254416
  8. 648025
  9. 90668484
  10. 33524100
  11. 17956
  12. 122500
  13. 603729
  14. 388129
  15. 207936
  16. 24964
  17. 246016
  18. 36917776
  19. 27225
  20. 19811401
  21. 151321
  22. 14400
  23. 148996
  24. 19838116
  25. 59243809
  26. 543169
  27. 266256
  28. 491401
  29. 29181604
  30. 335241
  31. 21734244
  32. 1444804
  33. 198916
  34. 20286016
  35. 72900
  36. 13727025
  37. 318096
  38. 42025
  39. 61009
  40. 483025

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