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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 139 · 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 44743 =
  2. 2.Digital root of 87 × 16 =
  3. 3.Digital root of 93820 =
  4. 4.Digital root of 62 × 37 =
  5. 5.Digital root of 33827 =
  6. 6.Digital root of 11618 =
  7. 7.Digital root of 184 =
  8. 8.Digital root of 27760 =
  9. 9.Digital root of 51 × 72 =
  10. 10.Digital root of 94 × 12 =
  11. 11.Digital root of 62343 =
  12. 12.Digital root of 33 × 79 =
  13. 13.Digital root of 50024 =
  14. 14.Digital root of 21366 =
  15. 15.Digital root of 41167 =
  16. 16.Digital root of 19461 =
  17. 17.Digital root of 64368 =
  18. 18.Digital root of 14 × 63 =
  19. 19.Digital root of 75 × 91 =
  20. 20.Digital root of 42 × 38 =
  21. 21.Digital root of 97053 =
  22. 22.Digital root of 91 × 29 =
  23. 23.Digital root of 59 × 41 =
  24. 24.Digital root of 16697 =
  25. 25.Digital root of 71 × 29 =
  26. 26.Digital root of 75681 =
  27. 27.Digital root of 46931 =
  28. 28.Digital root of 32120 =
  29. 29.Digital root of 81 × 55 =
  30. 30.Digital root of 77150 =
  31. 31.Digital root of 92329 =
  32. 32.Digital root of 83 × 57 =
  33. 33.Digital root of 40 × 79 =
  34. 34.Digital root of 67458 =
  35. 35.Digital root of 54442 =
  36. 36.Digital root of 61 × 30 =
  37. 37.Digital root of 12 × 90 =
  38. 38.Digital root of 19855 =
  39. 39.Digital root of 51 × 25 =
  40. 40.Digital root of 15 × 28 =

Answer key

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

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