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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 893 · 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 14811 =
  2. 2.Digital root of 20 × 59 =
  3. 3.Digital root of 66389 =
  4. 4.Digital root of 98344 =
  5. 5.Digital root of 98 × 83 =
  6. 6.Digital root of 85 × 82 =
  7. 7.Digital root of 28 × 32 =
  8. 8.Digital root of 13140 =
  9. 9.Digital root of 67974 =
  10. 10.Digital root of 55 × 94 =
  11. 11.Digital root of 27028 =
  12. 12.Digital root of 97 × 37 =
  13. 13.Digital root of 21 × 68 =
  14. 14.Digital root of 86 × 15 =
  15. 15.Digital root of 81 × 63 =
  16. 16.Digital root of 38468 =
  17. 17.Digital root of 80 × 58 =
  18. 18.Digital root of 79072 =
  19. 19.Digital root of 63 × 87 =
  20. 20.Digital root of 64955 =
  21. 21.Digital root of 9984 =
  22. 22.Digital root of 65073 =
  23. 23.Digital root of 42 × 49 =
  24. 24.Digital root of 73 × 87 =
  25. 25.Digital root of 10107 =
  26. 26.Digital root of 22845 =
  27. 27.Digital root of 29 × 61 =
  28. 28.Digital root of 31896 =
  29. 29.Digital root of 97192 =
  30. 30.Digital root of 63889 =
  31. 31.Digital root of 92 × 30 =
  32. 32.Digital root of 34216 =
  33. 33.Digital root of 38301 =
  34. 34.Digital root of 61 × 59 =
  35. 35.Digital root of 89168 =
  36. 36.Digital root of 57194 =
  37. 37.Digital root of 88694 =
  38. 38.Digital root of 81822 =
  39. 39.Digital root of 70872 =
  40. 40.Digital root of 38857 =

Answer key

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

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