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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 7 · 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 43272 =
  2. 2.Digital root of 12912 =
  3. 3.Digital root of 47613 =
  4. 4.Digital root of 69987 =
  5. 5.Digital root of 59319 =
  6. 6.Digital root of 13 × 61 =
  7. 7.Digital root of 79 × 90 =
  8. 8.Digital root of 18 × 83 =
  9. 9.Digital root of 11494 =
  10. 10.Digital root of 53410 =
  11. 11.Digital root of 85035 =
  12. 12.Digital root of 14 × 13 =
  13. 13.Digital root of 58145 =
  14. 14.Digital root of 39 × 43 =
  15. 15.Digital root of 53943 =
  16. 16.Digital root of 73487 =
  17. 17.Digital root of 23 × 26 =
  18. 18.Digital root of 40751 =
  19. 19.Digital root of 58 × 92 =
  20. 20.Digital root of 28133 =
  21. 21.Digital root of 11167 =
  22. 22.Digital root of 54836 =
  23. 23.Digital root of 24 × 39 =
  24. 24.Digital root of 51261 =
  25. 25.Digital root of 78 × 85 =
  26. 26.Digital root of 97 × 73 =
  27. 27.Digital root of 89 × 78 =
  28. 28.Digital root of 53 × 64 =
  29. 29.Digital root of 59 × 14 =
  30. 30.Digital root of 49553 =
  31. 31.Digital root of 22 × 21 =
  32. 32.Digital root of 75 × 60 =
  33. 33.Digital root of 55868 =
  34. 34.Digital root of 18650 =
  35. 35.Digital root of 93 × 79 =
  36. 36.Digital root of 90 × 30 =
  37. 37.Digital root of 35 × 51 =
  38. 38.Digital root of 25 × 74 =
  39. 39.Digital root of 60602 =
  40. 40.Digital root of 80830 =

Answer key

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

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