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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 289 · 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 9040 =
  2. 2.Digital root of 13 × 21 =
  3. 3.Digital root of 89800 =
  4. 4.Digital root of 60907 =
  5. 5.Digital root of 45624 =
  6. 6.Digital root of 18455 =
  7. 7.Digital root of 10852 =
  8. 8.Digital root of 55 × 91 =
  9. 9.Digital root of 47943 =
  10. 10.Digital root of 15 × 62 =
  11. 11.Digital root of 17 × 78 =
  12. 12.Digital root of 77011 =
  13. 13.Digital root of 51 × 81 =
  14. 14.Digital root of 68 × 41 =
  15. 15.Digital root of 48 × 50 =
  16. 16.Digital root of 31 × 68 =
  17. 17.Digital root of 27571 =
  18. 18.Digital root of 89 × 81 =
  19. 19.Digital root of 35 × 95 =
  20. 20.Digital root of 30567 =
  21. 21.Digital root of 24 × 20 =
  22. 22.Digital root of 93630 =
  23. 23.Digital root of 52259 =
  24. 24.Digital root of 14 × 25 =
  25. 25.Digital root of 25 × 82 =
  26. 26.Digital root of 33 × 24 =
  27. 27.Digital root of 10704 =
  28. 28.Digital root of 32650 =
  29. 29.Digital root of 37627 =
  30. 30.Digital root of 51033 =
  31. 31.Digital root of 92 × 96 =
  32. 32.Digital root of 53680 =
  33. 33.Digital root of 48645 =
  34. 34.Digital root of 61 × 20 =
  35. 35.Digital root of 86141 =
  36. 36.Digital root of 48 × 72 =
  37. 37.Digital root of 79458 =
  38. 38.Digital root of 11010 =
  39. 39.Digital root of 41199 =
  40. 40.Digital root of 25088 =

Answer key

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

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