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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 222 · 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 97 × 29 =
  2. 2.Digital root of 34504 =
  3. 3.Digital root of 50862 =
  4. 4.Digital root of 18 × 71 =
  5. 5.Digital root of 61 × 68 =
  6. 6.Digital root of 64 × 44 =
  7. 7.Digital root of 91553 =
  8. 8.Digital root of 22 × 74 =
  9. 9.Digital root of 63415 =
  10. 10.Digital root of 66292 =
  11. 11.Digital root of 74 × 59 =
  12. 12.Digital root of 47 × 41 =
  13. 13.Digital root of 3044 =
  14. 14.Digital root of 17 × 75 =
  15. 15.Digital root of 90571 =
  16. 16.Digital root of 40734 =
  17. 17.Digital root of 11101 =
  18. 18.Digital root of 48692 =
  19. 19.Digital root of 92117 =
  20. 20.Digital root of 119 =
  21. 21.Digital root of 51 × 83 =
  22. 22.Digital root of 10083 =
  23. 23.Digital root of 95966 =
  24. 24.Digital root of 79 × 75 =
  25. 25.Digital root of 91 × 69 =
  26. 26.Digital root of 62 × 35 =
  27. 27.Digital root of 48 × 29 =
  28. 28.Digital root of 22 × 22 =
  29. 29.Digital root of 40 × 45 =
  30. 30.Digital root of 31 × 36 =
  31. 31.Digital root of 79971 =
  32. 32.Digital root of 12 × 99 =
  33. 33.Digital root of 84272 =
  34. 34.Digital root of 97 × 59 =
  35. 35.Digital root of 68899 =
  36. 36.Digital root of 21 × 12 =
  37. 37.Digital root of 35 × 95 =
  38. 38.Digital root of 25263 =
  39. 39.Digital root of 68 × 49 =
  40. 40.Digital root of 59 × 98 =

Answer key

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

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