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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 341 · 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 40432 =
  2. 2.Digital root of 79 × 42 =
  3. 3.Digital root of 16 × 17 =
  4. 4.Digital root of 48072 =
  5. 5.Digital root of 47 × 82 =
  6. 6.Digital root of 94950 =
  7. 7.Digital root of 81365 =
  8. 8.Digital root of 91633 =
  9. 9.Digital root of 72746 =
  10. 10.Digital root of 11406 =
  11. 11.Digital root of 98 × 24 =
  12. 12.Digital root of 63325 =
  13. 13.Digital root of 32342 =
  14. 14.Digital root of 48 × 49 =
  15. 15.Digital root of 51258 =
  16. 16.Digital root of 69 × 51 =
  17. 17.Digital root of 66904 =
  18. 18.Digital root of 78031 =
  19. 19.Digital root of 47 × 31 =
  20. 20.Digital root of 35077 =
  21. 21.Digital root of 15 × 41 =
  22. 22.Digital root of 61040 =
  23. 23.Digital root of 90 × 14 =
  24. 24.Digital root of 83716 =
  25. 25.Digital root of 8134 =
  26. 26.Digital root of 14728 =
  27. 27.Digital root of 48 × 85 =
  28. 28.Digital root of 14919 =
  29. 29.Digital root of 53301 =
  30. 30.Digital root of 28 × 20 =
  31. 31.Digital root of 33 × 98 =
  32. 32.Digital root of 61 × 98 =
  33. 33.Digital root of 8864 =
  34. 34.Digital root of 31 × 63 =
  35. 35.Digital root of 97 × 37 =
  36. 36.Digital root of 91925 =
  37. 37.Digital root of 82 × 66 =
  38. 38.Digital root of 99508 =
  39. 39.Digital root of 29 × 87 =
  40. 40.Digital root of 91 × 81 =

Answer key

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

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