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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 48 · 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 12 × 94 =
  2. 2.Digital root of 85 × 39 =
  3. 3.Digital root of 17 × 46 =
  4. 4.Digital root of 23 × 42 =
  5. 5.Digital root of 33265 =
  6. 6.Digital root of 6112 =
  7. 7.Digital root of 49654 =
  8. 8.Digital root of 33 × 17 =
  9. 9.Digital root of 89 × 72 =
  10. 10.Digital root of 63737 =
  11. 11.Digital root of 22 × 91 =
  12. 12.Digital root of 26 × 61 =
  13. 13.Digital root of 38 × 39 =
  14. 14.Digital root of 84 × 85 =
  15. 15.Digital root of 81 × 78 =
  16. 16.Digital root of 25 × 59 =
  17. 17.Digital root of 95092 =
  18. 18.Digital root of 45752 =
  19. 19.Digital root of 85 × 87 =
  20. 20.Digital root of 58836 =
  21. 21.Digital root of 75 × 83 =
  22. 22.Digital root of 13 × 76 =
  23. 23.Digital root of 6929 =
  24. 24.Digital root of 32 × 61 =
  25. 25.Digital root of 88975 =
  26. 26.Digital root of 52 × 64 =
  27. 27.Digital root of 21475 =
  28. 28.Digital root of 79 × 75 =
  29. 29.Digital root of 91 × 66 =
  30. 30.Digital root of 9058 =
  31. 31.Digital root of 20 × 55 =
  32. 32.Digital root of 47796 =
  33. 33.Digital root of 65 × 22 =
  34. 34.Digital root of 93416 =
  35. 35.Digital root of 97 × 27 =
  36. 36.Digital root of 55072 =
  37. 37.Digital root of 96329 =
  38. 38.Digital root of 85167 =
  39. 39.Digital root of 79 × 70 =
  40. 40.Digital root of 73 × 12 =

Answer key

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

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