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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 734 · 40 sums
TalentJR

The trick (Gunita Samuccayah): Add the digits of a number; keep adding until one digit is left (a total of 9 stays 9). For a product, multiply the digital roots of the two numbers and take the digital root of that. If your answer’s digital root is different, the answer is wrong.

NameDateTime takenScore ___ / 40
  1. 1.Digital root of 479 =
  2. 2.Digital root of 43 × 96 =
  3. 3.Digital root of 57 × 95 =
  4. 4.Digital root of 82471 =
  5. 5.Digital root of 36032 =
  6. 6.Digital root of 1027 =
  7. 7.Digital root of 14 × 29 =
  8. 8.Digital root of 43 × 70 =
  9. 9.Digital root of 93 × 93 =
  10. 10.Digital root of 52324 =
  11. 11.Digital root of 78308 =
  12. 12.Digital root of 46 × 56 =
  13. 13.Digital root of 45886 =
  14. 14.Digital root of 26560 =
  15. 15.Digital root of 84 × 72 =
  16. 16.Digital root of 26389 =
  17. 17.Digital root of 11720 =
  18. 18.Digital root of 68 × 20 =
  19. 19.Digital root of 7573 =
  20. 20.Digital root of 91212 =
  21. 21.Digital root of 15341 =
  22. 22.Digital root of 16 × 52 =
  23. 23.Digital root of 50 × 23 =
  24. 24.Digital root of 91 × 35 =
  25. 25.Digital root of 19008 =
  26. 26.Digital root of 15637 =
  27. 27.Digital root of 16 × 36 =
  28. 28.Digital root of 6582 =
  29. 29.Digital root of 20013 =
  30. 30.Digital root of 17629 =
  31. 31.Digital root of 38 × 81 =
  32. 32.Digital root of 42 × 82 =
  33. 33.Digital root of 56 × 40 =
  34. 34.Digital root of 10631 =
  35. 35.Digital root of 90 × 80 =
  36. 36.Digital root of 12580 =
  37. 37.Digital root of 50 × 77 =
  38. 38.Digital root of 20339 =
  39. 39.Digital root of 72 × 33 =
  40. 40.Digital root of 32536 =

Answer key

  1. 2
  2. 6
  3. 6
  4. 4
  5. 5
  6. 1
  7. 1
  8. 4
  9. 9
  10. 7
  11. 8
  12. 2
  13. 4
  14. 1
  15. 9
  16. 1
  17. 2
  18. 1
  19. 4
  20. 6
  21. 5
  22. 4
  23. 7
  24. 8
  25. 9
  26. 4
  27. 9
  28. 3
  29. 6
  30. 7
  31. 9
  32. 6
  33. 8
  34. 2
  35. 9
  36. 7
  37. 7
  38. 8
  39. 9
  40. 1

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