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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 572 · 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. 1.620² =
  2. 2.934² =
  3. 3.183² =
  4. 4.3965² =
  5. 5.164² =
  6. 6.7639² =
  7. 7.624² =
  8. 8.593² =
  9. 9.981² =
  10. 10.9986² =
  11. 11.199² =
  12. 12.218² =
  13. 13.6546² =
  14. 14.201² =
  15. 15.424² =
  16. 16.133² =
  17. 17.5041² =
  18. 18.806² =
  19. 19.2655² =
  20. 20.552² =
  21. 21.834² =
  22. 22.338² =
  23. 23.863² =
  24. 24.837² =
  25. 25.307² =
  26. 26.8268² =
  27. 27.748² =
  28. 28.995² =
  29. 29.1563² =
  30. 30.657² =
  31. 31.977² =
  32. 32.245² =
  33. 33.213² =
  34. 34.258² =
  35. 35.756² =
  36. 36.824² =
  37. 37.6825² =
  38. 38.799² =
  39. 39.976² =
  40. 40.2928² =

Answer key

  1. 384400
  2. 872356
  3. 33489
  4. 15721225
  5. 26896
  6. 58354321
  7. 389376
  8. 351649
  9. 962361
  10. 99720196
  11. 39601
  12. 47524
  13. 42850116
  14. 40401
  15. 179776
  16. 17689
  17. 25411681
  18. 649636
  19. 7049025
  20. 304704
  21. 695556
  22. 114244
  23. 744769
  24. 700569
  25. 94249
  26. 68359824
  27. 559504
  28. 990025
  29. 2442969
  30. 431649
  31. 954529
  32. 60025
  33. 45369
  34. 66564
  35. 571536
  36. 678976
  37. 46580625
  38. 638401
  39. 952576
  40. 8573184

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