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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 198 · 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 58 × 14 =
  2. 2.Digital root of 39234 =
  3. 3.Digital root of 54556 =
  4. 4.Digital root of 96913 =
  5. 5.Digital root of 41850 =
  6. 6.Digital root of 62 × 72 =
  7. 7.Digital root of 58669 =
  8. 8.Digital root of 69742 =
  9. 9.Digital root of 40 × 58 =
  10. 10.Digital root of 19 × 35 =
  11. 11.Digital root of 87 × 29 =
  12. 12.Digital root of 4076 =
  13. 13.Digital root of 97522 =
  14. 14.Digital root of 37 × 90 =
  15. 15.Digital root of 34 × 97 =
  16. 16.Digital root of 70535 =
  17. 17.Digital root of 45211 =
  18. 18.Digital root of 61 × 98 =
  19. 19.Digital root of 45 × 80 =
  20. 20.Digital root of 79372 =
  21. 21.Digital root of 28705 =
  22. 22.Digital root of 12 × 90 =
  23. 23.Digital root of 28 × 82 =
  24. 24.Digital root of 14 × 17 =
  25. 25.Digital root of 6663 =
  26. 26.Digital root of 25812 =
  27. 27.Digital root of 13661 =
  28. 28.Digital root of 33 × 22 =
  29. 29.Digital root of 42 × 57 =
  30. 30.Digital root of 91 × 14 =
  31. 31.Digital root of 82 × 29 =
  32. 32.Digital root of 63 × 74 =
  33. 33.Digital root of 84537 =
  34. 34.Digital root of 85 × 14 =
  35. 35.Digital root of 92 × 30 =
  36. 36.Digital root of 98 × 97 =
  37. 37.Digital root of 90388 =
  38. 38.Digital root of 52016 =
  39. 39.Digital root of 93080 =
  40. 40.Digital root of 18 × 33 =

Answer key

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

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