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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 812 · 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. 1.337² =
  2. 2.318² =
  3. 3.211² =
  4. 4.656² =
  5. 5.2753² =
  6. 6.2740² =
  7. 7.598² =
  8. 8.768² =
  9. 9.138² =
  10. 10.1023² =
  11. 11.804² =
  12. 12.287² =
  13. 13.312² =
  14. 14.940² =
  15. 15.358² =
  16. 16.2322² =
  17. 17.202² =
  18. 18.355² =
  19. 19.732² =
  20. 20.642² =
  21. 21.215² =
  22. 22.335² =
  23. 23.946² =
  24. 24.150² =
  25. 25.473² =
  26. 26.891² =
  27. 27.508² =
  28. 28.595² =
  29. 29.787² =
  30. 30.820² =
  31. 31.866² =
  32. 32.448² =
  33. 33.7655² =
  34. 34.5478² =
  35. 35.1418² =
  36. 36.950² =
  37. 37.513² =
  38. 38.9530² =
  39. 39.339² =
  40. 40.663² =

Answer key

  1. 113569
  2. 101124
  3. 44521
  4. 430336
  5. 7579009
  6. 7507600
  7. 357604
  8. 589824
  9. 19044
  10. 1046529
  11. 646416
  12. 82369
  13. 97344
  14. 883600
  15. 128164
  16. 5391684
  17. 40804
  18. 126025
  19. 535824
  20. 412164
  21. 46225
  22. 112225
  23. 894916
  24. 22500
  25. 223729
  26. 793881
  27. 258064
  28. 354025
  29. 619369
  30. 672400
  31. 749956
  32. 200704
  33. 58599025
  34. 30008484
  35. 2010724
  36. 902500
  37. 263169
  38. 90820900
  39. 114921
  40. 439569

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