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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 928 · 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. 1.9897² =
  2. 2.466² =
  3. 3.974² =
  4. 4.825² =
  5. 5.259² =
  6. 6.219² =
  7. 7.678² =
  8. 8.939² =
  9. 9.510² =
  10. 10.8869² =
  11. 11.2428² =
  12. 12.275² =
  13. 13.3613² =
  14. 14.987² =
  15. 15.255² =
  16. 16.118² =
  17. 17.841² =
  18. 18.714² =
  19. 19.320² =
  20. 20.408² =
  21. 21.264² =
  22. 22.288² =
  23. 23.315² =
  24. 24.470² =
  25. 25.297² =
  26. 26.761² =
  27. 27.837² =
  28. 28.620² =
  29. 29.163² =
  30. 30.207² =
  31. 31.7983² =
  32. 32.565² =
  33. 33.701² =
  34. 34.294² =
  35. 35.1291² =
  36. 36.673² =
  37. 37.2718² =
  38. 38.7033² =
  39. 39.723² =
  40. 40.840² =

Answer key

  1. 97950609
  2. 217156
  3. 948676
  4. 680625
  5. 67081
  6. 47961
  7. 459684
  8. 881721
  9. 260100
  10. 78659161
  11. 5895184
  12. 75625
  13. 13053769
  14. 974169
  15. 65025
  16. 13924
  17. 707281
  18. 509796
  19. 102400
  20. 166464
  21. 69696
  22. 82944
  23. 99225
  24. 220900
  25. 88209
  26. 579121
  27. 700569
  28. 384400
  29. 26569
  30. 42849
  31. 63728289
  32. 319225
  33. 491401
  34. 86436
  35. 1666681
  36. 452929
  37. 7387524
  38. 49463089
  39. 522729
  40. 705600

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