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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 626 · 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. 1.8789² =
  2. 2.2999² =
  3. 3.571² =
  4. 4.349² =
  5. 5.786² =
  6. 6.6703² =
  7. 7.807² =
  8. 8.3044² =
  9. 9.3502² =
  10. 10.832² =
  11. 11.8290² =
  12. 12.197² =
  13. 13.601² =
  14. 14.360² =
  15. 15.3557² =
  16. 16.893² =
  17. 17.470² =
  18. 18.736² =
  19. 19.1635² =
  20. 20.378² =
  21. 21.6387² =
  22. 22.616² =
  23. 23.7175² =
  24. 24.184² =
  25. 25.1295² =
  26. 26.3619² =
  27. 27.2578² =
  28. 28.741² =
  29. 29.395² =
  30. 30.3374² =
  31. 31.8798² =
  32. 32.983² =
  33. 33.7530² =
  34. 34.6451² =
  35. 35.113² =
  36. 36.3075² =
  37. 37.830² =
  38. 38.277² =
  39. 39.785² =
  40. 40.764² =

Answer key

  1. 77246521
  2. 8994001
  3. 326041
  4. 121801
  5. 617796
  6. 44930209
  7. 651249
  8. 9265936
  9. 12264004
  10. 692224
  11. 68724100
  12. 38809
  13. 361201
  14. 129600
  15. 12652249
  16. 797449
  17. 220900
  18. 541696
  19. 2673225
  20. 142884
  21. 40793769
  22. 379456
  23. 51480625
  24. 33856
  25. 1677025
  26. 13097161
  27. 6646084
  28. 549081
  29. 156025
  30. 11383876
  31. 77404804
  32. 966289
  33. 56700900
  34. 41615401
  35. 12769
  36. 9455625
  37. 688900
  38. 76729
  39. 616225
  40. 583696

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