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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 289 · 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. 1.3983² =
  2. 2.829² =
  3. 3.9013² =
  4. 4.4464² =
  5. 5.471² =
  6. 6.344² =
  7. 7.408² =
  8. 8.216² =
  9. 9.662² =
  10. 10.2041² =
  11. 11.1524² =
  12. 12.7864² =
  13. 13.847² =
  14. 14.7992² =
  15. 15.335² =
  16. 16.830² =
  17. 17.361² =
  18. 18.278² =
  19. 19.814² =
  20. 20.5736² =
  21. 21.956² =
  22. 22.508² =
  23. 23.8189² =
  24. 24.342² =
  25. 25.6194² =
  26. 26.253² =
  27. 27.185² =
  28. 28.989² =
  29. 29.565² =
  30. 30.6088² =
  31. 31.327² =
  32. 32.8483² =
  33. 33.694² =
  34. 34.382² =
  35. 35.283² =
  36. 36.257² =
  37. 37.3597² =
  38. 38.743² =
  39. 39.281² =
  40. 40.115² =

Answer key

  1. 15864289
  2. 687241
  3. 81234169
  4. 19927296
  5. 221841
  6. 118336
  7. 166464
  8. 46656
  9. 438244
  10. 4165681
  11. 2322576
  12. 61842496
  13. 717409
  14. 63872064
  15. 112225
  16. 688900
  17. 130321
  18. 77284
  19. 662596
  20. 32901696
  21. 913936
  22. 258064
  23. 67059721
  24. 116964
  25. 38365636
  26. 64009
  27. 34225
  28. 978121
  29. 319225
  30. 37063744
  31. 106929
  32. 71961289
  33. 481636
  34. 145924
  35. 80089
  36. 66049
  37. 12938409
  38. 552049
  39. 78961
  40. 13225

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