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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 392 · 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. 1.8470² =
  2. 2.2098² =
  3. 3.5251² =
  4. 4.108² =
  5. 5.5235² =
  6. 6.925² =
  7. 7.520² =
  8. 8.3307² =
  9. 9.6605² =
  10. 10.817² =
  11. 11.880² =
  12. 12.704² =
  13. 13.387² =
  14. 14.3666² =
  15. 15.459² =
  16. 16.990² =
  17. 17.1454² =
  18. 18.773² =
  19. 19.4897² =
  20. 20.667² =
  21. 21.774² =
  22. 22.8954² =
  23. 23.5341² =
  24. 24.8694² =
  25. 25.904² =
  26. 26.374² =
  27. 27.816² =
  28. 28.409² =
  29. 29.449² =
  30. 30.799² =
  31. 31.786² =
  32. 32.702² =
  33. 33.7001² =
  34. 34.146² =
  35. 35.350² =
  36. 36.425² =
  37. 37.9554² =
  38. 38.787² =
  39. 39.216² =
  40. 40.7662² =

Answer key

  1. 71740900
  2. 4401604
  3. 27573001
  4. 11664
  5. 27405225
  6. 855625
  7. 270400
  8. 10936249
  9. 43626025
  10. 667489
  11. 774400
  12. 495616
  13. 149769
  14. 13439556
  15. 210681
  16. 980100
  17. 2114116
  18. 597529
  19. 23980609
  20. 444889
  21. 599076
  22. 80174116
  23. 28526281
  24. 75585636
  25. 817216
  26. 139876
  27. 665856
  28. 167281
  29. 201601
  30. 638401
  31. 617796
  32. 492804
  33. 49014001
  34. 21316
  35. 122500
  36. 180625
  37. 91278916
  38. 619369
  39. 46656
  40. 58706244

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