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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 921 · 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 48 × 53 =
  2. 2.Digital root of 64010 =
  3. 3.Digital root of 89675 =
  4. 4.Digital root of 42 × 54 =
  5. 5.Digital root of 57 × 97 =
  6. 6.Digital root of 33 × 68 =
  7. 7.Digital root of 35 × 37 =
  8. 8.Digital root of 6184 =
  9. 9.Digital root of 6372 =
  10. 10.Digital root of 49 × 69 =
  11. 11.Digital root of 82 × 12 =
  12. 12.Digital root of 56044 =
  13. 13.Digital root of 24559 =
  14. 14.Digital root of 57 × 92 =
  15. 15.Digital root of 48132 =
  16. 16.Digital root of 41107 =
  17. 17.Digital root of 44474 =
  18. 18.Digital root of 62277 =
  19. 19.Digital root of 91 × 12 =
  20. 20.Digital root of 69389 =
  21. 21.Digital root of 97 × 40 =
  22. 22.Digital root of 13877 =
  23. 23.Digital root of 93630 =
  24. 24.Digital root of 74 × 21 =
  25. 25.Digital root of 18505 =
  26. 26.Digital root of 69114 =
  27. 27.Digital root of 41 × 48 =
  28. 28.Digital root of 32831 =
  29. 29.Digital root of 44321 =
  30. 30.Digital root of 98 × 69 =
  31. 31.Digital root of 8355 =
  32. 32.Digital root of 64006 =
  33. 33.Digital root of 26 × 33 =
  34. 34.Digital root of 95659 =
  35. 35.Digital root of 79489 =
  36. 36.Digital root of 53 × 58 =
  37. 37.Digital root of 83853 =
  38. 38.Digital root of 28 × 88 =
  39. 39.Digital root of 90276 =
  40. 40.Digital root of 74 × 97 =

Answer key

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

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