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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 794 · 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. 1.7943² =
  2. 2.740² =
  3. 3.975² =
  4. 4.332² =
  5. 5.387² =
  6. 6.727² =
  7. 7.818² =
  8. 8.213² =
  9. 9.2686² =
  10. 10.7679² =
  11. 11.355² =
  12. 12.2802² =
  13. 13.709² =
  14. 14.331² =
  15. 15.650² =
  16. 16.365² =
  17. 17.133² =
  18. 18.143² =
  19. 19.3497² =
  20. 20.582² =
  21. 21.958² =
  22. 22.6778² =
  23. 23.142² =
  24. 24.206² =
  25. 25.2450² =
  26. 26.400² =
  27. 27.269² =
  28. 28.863² =
  29. 29.694² =
  30. 30.345² =
  31. 31.161² =
  32. 32.8562² =
  33. 33.935² =
  34. 34.792² =
  35. 35.2582² =
  36. 36.785² =
  37. 37.759² =
  38. 38.5535² =
  39. 39.950² =
  40. 40.730² =

Answer key

  1. 63091249
  2. 547600
  3. 950625
  4. 110224
  5. 149769
  6. 528529
  7. 669124
  8. 45369
  9. 7214596
  10. 58967041
  11. 126025
  12. 7851204
  13. 502681
  14. 109561
  15. 422500
  16. 133225
  17. 17689
  18. 20449
  19. 12229009
  20. 338724
  21. 917764
  22. 45941284
  23. 20164
  24. 42436
  25. 6002500
  26. 160000
  27. 72361
  28. 744769
  29. 481636
  30. 119025
  31. 25921
  32. 73307844
  33. 874225
  34. 627264
  35. 6666724
  36. 616225
  37. 576081
  38. 30636225
  39. 902500
  40. 532900

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