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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 429 · 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 5690 =
  2. 2.Digital root of 57968 =
  3. 3.Digital root of 93 × 41 =
  4. 4.Digital root of 71177 =
  5. 5.Digital root of 24828 =
  6. 6.Digital root of 57 × 47 =
  7. 7.Digital root of 93 × 28 =
  8. 8.Digital root of 49117 =
  9. 9.Digital root of 38015 =
  10. 10.Digital root of 93 × 36 =
  11. 11.Digital root of 50 × 60 =
  12. 12.Digital root of 46 × 81 =
  13. 13.Digital root of 12081 =
  14. 14.Digital root of 5320 =
  15. 15.Digital root of 85625 =
  16. 16.Digital root of 81 × 64 =
  17. 17.Digital root of 53 × 81 =
  18. 18.Digital root of 75 × 27 =
  19. 19.Digital root of 15 × 49 =
  20. 20.Digital root of 93013 =
  21. 21.Digital root of 58580 =
  22. 22.Digital root of 23 × 72 =
  23. 23.Digital root of 94 × 20 =
  24. 24.Digital root of 7509 =
  25. 25.Digital root of 91775 =
  26. 26.Digital root of 47 × 21 =
  27. 27.Digital root of 83 × 32 =
  28. 28.Digital root of 78270 =
  29. 29.Digital root of 22 × 16 =
  30. 30.Digital root of 24319 =
  31. 31.Digital root of 47 × 25 =
  32. 32.Digital root of 16395 =
  33. 33.Digital root of 64 × 75 =
  34. 34.Digital root of 28 × 72 =
  35. 35.Digital root of 90 × 60 =
  36. 36.Digital root of 27401 =
  37. 37.Digital root of 20 × 63 =
  38. 38.Digital root of 49013 =
  39. 39.Digital root of 72385 =
  40. 40.Digital root of 98 × 12 =

Answer key

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

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