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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 583 · 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 72808 =
  2. 2.Digital root of 76645 =
  3. 3.Digital root of 74 × 99 =
  4. 4.Digital root of 55061 =
  5. 5.Digital root of 71070 =
  6. 6.Digital root of 64 × 24 =
  7. 7.Digital root of 64 × 29 =
  8. 8.Digital root of 15 × 28 =
  9. 9.Digital root of 41489 =
  10. 10.Digital root of 31 × 49 =
  11. 11.Digital root of 62 × 84 =
  12. 12.Digital root of 13702 =
  13. 13.Digital root of 30 × 37 =
  14. 14.Digital root of 92771 =
  15. 15.Digital root of 85677 =
  16. 16.Digital root of 311 =
  17. 17.Digital root of 64616 =
  18. 18.Digital root of 83 × 54 =
  19. 19.Digital root of 61 × 97 =
  20. 20.Digital root of 2101 =
  21. 21.Digital root of 89946 =
  22. 22.Digital root of 21 × 32 =
  23. 23.Digital root of 35374 =
  24. 24.Digital root of 17 × 69 =
  25. 25.Digital root of 98315 =
  26. 26.Digital root of 75 × 51 =
  27. 27.Digital root of 88938 =
  28. 28.Digital root of 56 × 30 =
  29. 29.Digital root of 91141 =
  30. 30.Digital root of 13988 =
  31. 31.Digital root of 61068 =
  32. 32.Digital root of 56 × 41 =
  33. 33.Digital root of 49958 =
  34. 34.Digital root of 45692 =
  35. 35.Digital root of 96 × 81 =
  36. 36.Digital root of 69 × 15 =
  37. 37.Digital root of 36 × 20 =
  38. 38.Digital root of 86737 =
  39. 39.Digital root of 94323 =
  40. 40.Digital root of 39779 =

Answer key

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

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