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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 174 · 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. 1.656² =
  2. 2.822² =
  3. 3.139² =
  4. 4.606² =
  5. 5.789² =
  6. 6.3982² =
  7. 7.4642² =
  8. 8.511² =
  9. 9.7306² =
  10. 10.787² =
  11. 11.691² =
  12. 12.4249² =
  13. 13.729² =
  14. 14.968² =
  15. 15.1888² =
  16. 16.343² =
  17. 17.752² =
  18. 18.515² =
  19. 19.3193² =
  20. 20.121² =
  21. 21.6390² =
  22. 22.597² =
  23. 23.505² =
  24. 24.3365² =
  25. 25.619² =
  26. 26.897² =
  27. 27.3625² =
  28. 28.959² =
  29. 29.585² =
  30. 30.1146² =
  31. 31.8635² =
  32. 32.1757² =
  33. 33.846² =
  34. 34.772² =
  35. 35.3991² =
  36. 36.891² =
  37. 37.485² =
  38. 38.9772² =
  39. 39.979² =
  40. 40.234² =

Answer key

  1. 430336
  2. 675684
  3. 19321
  4. 367236
  5. 622521
  6. 15856324
  7. 21548164
  8. 261121
  9. 53377636
  10. 619369
  11. 477481
  12. 18054001
  13. 531441
  14. 937024
  15. 3564544
  16. 117649
  17. 565504
  18. 265225
  19. 10195249
  20. 14641
  21. 40832100
  22. 356409
  23. 255025
  24. 11323225
  25. 383161
  26. 804609
  27. 13140625
  28. 919681
  29. 342225
  30. 1313316
  31. 74563225
  32. 3087049
  33. 715716
  34. 595984
  35. 15928081
  36. 793881
  37. 235225
  38. 95491984
  39. 958441
  40. 54756

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