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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 308 · 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 34 × 92 =
  2. 2.Digital root of 69769 =
  3. 3.Digital root of 30234 =
  4. 4.Digital root of 58877 =
  5. 5.Digital root of 3930 =
  6. 6.Digital root of 9547 =
  7. 7.Digital root of 96 × 43 =
  8. 8.Digital root of 44 × 17 =
  9. 9.Digital root of 56 × 96 =
  10. 10.Digital root of 50118 =
  11. 11.Digital root of 38004 =
  12. 12.Digital root of 22 × 92 =
  13. 13.Digital root of 12980 =
  14. 14.Digital root of 93657 =
  15. 15.Digital root of 42 × 82 =
  16. 16.Digital root of 96 × 39 =
  17. 17.Digital root of 603 =
  18. 18.Digital root of 72 × 30 =
  19. 19.Digital root of 63 × 53 =
  20. 20.Digital root of 84468 =
  21. 21.Digital root of 29618 =
  22. 22.Digital root of 70 × 36 =
  23. 23.Digital root of 78631 =
  24. 24.Digital root of 52 × 55 =
  25. 25.Digital root of 20808 =
  26. 26.Digital root of 67 × 75 =
  27. 27.Digital root of 67 × 73 =
  28. 28.Digital root of 63616 =
  29. 29.Digital root of 24 × 70 =
  30. 30.Digital root of 80721 =
  31. 31.Digital root of 29 × 23 =
  32. 32.Digital root of 69 × 23 =
  33. 33.Digital root of 74011 =
  34. 34.Digital root of 68 × 13 =
  35. 35.Digital root of 15 × 61 =
  36. 36.Digital root of 98 × 61 =
  37. 37.Digital root of 9134 =
  38. 38.Digital root of 6681 =
  39. 39.Digital root of 10610 =
  40. 40.Digital root of 81 × 55 =

Answer key

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

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