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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 723 · 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 68082 =
  2. 2.Digital root of 91 × 40 =
  3. 3.Digital root of 66614 =
  4. 4.Digital root of 53 × 72 =
  5. 5.Digital root of 87 × 34 =
  6. 6.Digital root of 40649 =
  7. 7.Digital root of 54581 =
  8. 8.Digital root of 13016 =
  9. 9.Digital root of 84 × 85 =
  10. 10.Digital root of 73 × 86 =
  11. 11.Digital root of 30 × 25 =
  12. 12.Digital root of 27532 =
  13. 13.Digital root of 79910 =
  14. 14.Digital root of 47860 =
  15. 15.Digital root of 79 × 55 =
  16. 16.Digital root of 68344 =
  17. 17.Digital root of 83863 =
  18. 18.Digital root of 847 =
  19. 19.Digital root of 18161 =
  20. 20.Digital root of 11110 =
  21. 21.Digital root of 52497 =
  22. 22.Digital root of 68 × 66 =
  23. 23.Digital root of 94392 =
  24. 24.Digital root of 94 × 48 =
  25. 25.Digital root of 15443 =
  26. 26.Digital root of 35249 =
  27. 27.Digital root of 63677 =
  28. 28.Digital root of 63003 =
  29. 29.Digital root of 38 × 32 =
  30. 30.Digital root of 40 × 77 =
  31. 31.Digital root of 10474 =
  32. 32.Digital root of 16104 =
  33. 33.Digital root of 93504 =
  34. 34.Digital root of 61 × 70 =
  35. 35.Digital root of 33 × 70 =
  36. 36.Digital root of 88 × 94 =
  37. 37.Digital root of 84381 =
  38. 38.Digital root of 1795 =
  39. 39.Digital root of 23 × 92 =
  40. 40.Digital root of 33 × 66 =

Answer key

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

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