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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 365 · 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 17 × 28 =
  2. 2.Digital root of 21 × 63 =
  3. 3.Digital root of 49761 =
  4. 4.Digital root of 78244 =
  5. 5.Digital root of 41 × 45 =
  6. 6.Digital root of 48 × 26 =
  7. 7.Digital root of 99 × 59 =
  8. 8.Digital root of 36248 =
  9. 9.Digital root of 24 × 17 =
  10. 10.Digital root of 84 × 66 =
  11. 11.Digital root of 28 × 19 =
  12. 12.Digital root of 28 × 22 =
  13. 13.Digital root of 65839 =
  14. 14.Digital root of 30963 =
  15. 15.Digital root of 3413 =
  16. 16.Digital root of 57588 =
  17. 17.Digital root of 56 × 41 =
  18. 18.Digital root of 23787 =
  19. 19.Digital root of 32928 =
  20. 20.Digital root of 77989 =
  21. 21.Digital root of 64 × 48 =
  22. 22.Digital root of 26496 =
  23. 23.Digital root of 75939 =
  24. 24.Digital root of 37994 =
  25. 25.Digital root of 88807 =
  26. 26.Digital root of 96416 =
  27. 27.Digital root of 71328 =
  28. 28.Digital root of 30 × 99 =
  29. 29.Digital root of 4608 =
  30. 30.Digital root of 50517 =
  31. 31.Digital root of 15 × 35 =
  32. 32.Digital root of 86929 =
  33. 33.Digital root of 79 × 95 =
  34. 34.Digital root of 95 × 68 =
  35. 35.Digital root of 72 × 93 =
  36. 36.Digital root of 70 × 85 =
  37. 37.Digital root of 23281 =
  38. 38.Digital root of 74 × 43 =
  39. 39.Digital root of 68 × 78 =
  40. 40.Digital root of 16860 =

Answer key

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

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