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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 787 · 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 58291 =
  2. 2.Digital root of 20 × 96 =
  3. 3.Digital root of 83382 =
  4. 4.Digital root of 34 × 29 =
  5. 5.Digital root of 19 × 86 =
  6. 6.Digital root of 48 × 37 =
  7. 7.Digital root of 30470 =
  8. 8.Digital root of 67 × 91 =
  9. 9.Digital root of 29 × 68 =
  10. 10.Digital root of 65 × 61 =
  11. 11.Digital root of 15 × 72 =
  12. 12.Digital root of 78 × 14 =
  13. 13.Digital root of 42940 =
  14. 14.Digital root of 97 × 58 =
  15. 15.Digital root of 19682 =
  16. 16.Digital root of 47 × 82 =
  17. 17.Digital root of 29771 =
  18. 18.Digital root of 54049 =
  19. 19.Digital root of 84 × 46 =
  20. 20.Digital root of 83 × 22 =
  21. 21.Digital root of 92856 =
  22. 22.Digital root of 54 × 85 =
  23. 23.Digital root of 29744 =
  24. 24.Digital root of 44168 =
  25. 25.Digital root of 23872 =
  26. 26.Digital root of 87011 =
  27. 27.Digital root of 47 × 55 =
  28. 28.Digital root of 86 × 46 =
  29. 29.Digital root of 7888 =
  30. 30.Digital root of 29 × 91 =
  31. 31.Digital root of 11609 =
  32. 32.Digital root of 64 × 26 =
  33. 33.Digital root of 52959 =
  34. 34.Digital root of 67092 =
  35. 35.Digital root of 96877 =
  36. 36.Digital root of 74241 =
  37. 37.Digital root of 93618 =
  38. 38.Digital root of 49132 =
  39. 39.Digital root of 42994 =
  40. 40.Digital root of 25684 =

Answer key

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

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