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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 707 · 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. 1.133² =
  2. 2.621² =
  3. 3.339² =
  4. 4.847² =
  5. 5.806² =
  6. 6.143² =
  7. 7.4889² =
  8. 8.249² =
  9. 9.154² =
  10. 10.2086² =
  11. 11.480² =
  12. 12.446² =
  13. 13.8572² =
  14. 14.268² =
  15. 15.848² =
  16. 16.455² =
  17. 17.235² =
  18. 18.5871² =
  19. 19.636² =
  20. 20.336² =
  21. 21.4261² =
  22. 22.251² =
  23. 23.482² =
  24. 24.2001² =
  25. 25.319² =
  26. 26.121² =
  27. 27.6646² =
  28. 28.138² =
  29. 29.128² =
  30. 30.6408² =
  31. 31.6052² =
  32. 32.2865² =
  33. 33.393² =
  34. 34.312² =
  35. 35.241² =
  36. 36.113² =
  37. 37.3641² =
  38. 38.856² =
  39. 39.643² =
  40. 40.103² =

Answer key

  1. 17689
  2. 385641
  3. 114921
  4. 717409
  5. 649636
  6. 20449
  7. 23902321
  8. 62001
  9. 23716
  10. 4351396
  11. 230400
  12. 198916
  13. 73479184
  14. 71824
  15. 719104
  16. 207025
  17. 55225
  18. 34468641
  19. 404496
  20. 112896
  21. 18156121
  22. 63001
  23. 232324
  24. 4004001
  25. 101761
  26. 14641
  27. 44169316
  28. 19044
  29. 16384
  30. 41062464
  31. 36626704
  32. 8208225
  33. 154449
  34. 97344
  35. 58081
  36. 12769
  37. 13256881
  38. 732736
  39. 413449
  40. 10609

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