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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 199 · 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. 1.110² =
  2. 2.838² =
  3. 3.711² =
  4. 4.521² =
  5. 5.2117² =
  6. 6.7559² =
  7. 7.391² =
  8. 8.2392² =
  9. 9.883² =
  10. 10.8723² =
  11. 11.903² =
  12. 12.339² =
  13. 13.8778² =
  14. 14.632² =
  15. 15.233² =
  16. 16.863² =
  17. 17.8425² =
  18. 18.796² =
  19. 19.4108² =
  20. 20.307² =
  21. 21.2200² =
  22. 22.845² =
  23. 23.1616² =
  24. 24.155² =
  25. 25.910² =
  26. 26.585² =
  27. 27.1420² =
  28. 28.9092² =
  29. 29.137² =
  30. 30.420² =
  31. 31.873² =
  32. 32.599² =
  33. 33.182² =
  34. 34.824² =
  35. 35.425² =
  36. 36.5190² =
  37. 37.407² =
  38. 38.793² =
  39. 39.321² =
  40. 40.188² =

Answer key

  1. 12100
  2. 702244
  3. 505521
  4. 271441
  5. 4481689
  6. 57138481
  7. 152881
  8. 5721664
  9. 779689
  10. 76090729
  11. 815409
  12. 114921
  13. 77053284
  14. 399424
  15. 54289
  16. 744769
  17. 70980625
  18. 633616
  19. 16875664
  20. 94249
  21. 4840000
  22. 714025
  23. 2611456
  24. 24025
  25. 828100
  26. 342225
  27. 2016400
  28. 82664464
  29. 18769
  30. 176400
  31. 762129
  32. 358801
  33. 33124
  34. 678976
  35. 180625
  36. 26936100
  37. 165649
  38. 628849
  39. 103041
  40. 35344

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