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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 131 · 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 77053 =
  2. 2.Digital root of 94 × 93 =
  3. 3.Digital root of 69 × 67 =
  4. 4.Digital root of 2830 =
  5. 5.Digital root of 80 × 67 =
  6. 6.Digital root of 80767 =
  7. 7.Digital root of 53 × 43 =
  8. 8.Digital root of 50 × 20 =
  9. 9.Digital root of 57799 =
  10. 10.Digital root of 584 =
  11. 11.Digital root of 9169 =
  12. 12.Digital root of 61 × 43 =
  13. 13.Digital root of 60 × 40 =
  14. 14.Digital root of 64 × 84 =
  15. 15.Digital root of 39889 =
  16. 16.Digital root of 72 × 22 =
  17. 17.Digital root of 49738 =
  18. 18.Digital root of 92 × 33 =
  19. 19.Digital root of 91392 =
  20. 20.Digital root of 40 × 85 =
  21. 21.Digital root of 92608 =
  22. 22.Digital root of 70 × 65 =
  23. 23.Digital root of 43 × 17 =
  24. 24.Digital root of 22342 =
  25. 25.Digital root of 82008 =
  26. 26.Digital root of 59436 =
  27. 27.Digital root of 76142 =
  28. 28.Digital root of 39483 =
  29. 29.Digital root of 26 × 24 =
  30. 30.Digital root of 39 × 42 =
  31. 31.Digital root of 99 × 94 =
  32. 32.Digital root of 23 × 17 =
  33. 33.Digital root of 90447 =
  34. 34.Digital root of 75910 =
  35. 35.Digital root of 90700 =
  36. 36.Digital root of 61551 =
  37. 37.Digital root of 79 × 90 =
  38. 38.Digital root of 21 × 12 =
  39. 39.Digital root of 39914 =
  40. 40.Digital root of 90995 =

Answer key

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

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