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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 996 · 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. 1.815² =
  2. 2.310² =
  3. 3.3995² =
  4. 4.8006² =
  5. 5.4204² =
  6. 6.316² =
  7. 7.3016² =
  8. 8.514² =
  9. 9.973² =
  10. 10.2823² =
  11. 11.8259² =
  12. 12.818² =
  13. 13.842² =
  14. 14.4276² =
  15. 15.1243² =
  16. 16.488² =
  17. 17.353² =
  18. 18.133² =
  19. 19.806² =
  20. 20.696² =
  21. 21.8435² =
  22. 22.302² =
  23. 23.654² =
  24. 24.263² =
  25. 25.817² =
  26. 26.8154² =
  27. 27.465² =
  28. 28.635² =
  29. 29.232² =
  30. 30.5619² =
  31. 31.619² =
  32. 32.637² =
  33. 33.4727² =
  34. 34.336² =
  35. 35.136² =
  36. 36.332² =
  37. 37.6096² =
  38. 38.358² =
  39. 39.273² =
  40. 40.766² =

Answer key

  1. 664225
  2. 96100
  3. 15960025
  4. 64096036
  5. 17673616
  6. 99856
  7. 9096256
  8. 264196
  9. 946729
  10. 7969329
  11. 68211081
  12. 669124
  13. 708964
  14. 18284176
  15. 1545049
  16. 238144
  17. 124609
  18. 17689
  19. 649636
  20. 484416
  21. 71149225
  22. 91204
  23. 427716
  24. 69169
  25. 667489
  26. 66487716
  27. 216225
  28. 403225
  29. 53824
  30. 31573161
  31. 383161
  32. 405769
  33. 22344529
  34. 112896
  35. 18496
  36. 110224
  37. 37161216
  38. 128164
  39. 74529
  40. 586756

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