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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 617 · 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 11574 =
  2. 2.Digital root of 99042 =
  3. 3.Digital root of 91569 =
  4. 4.Digital root of 49 × 68 =
  5. 5.Digital root of 99534 =
  6. 6.Digital root of 27 × 33 =
  7. 7.Digital root of 57 × 28 =
  8. 8.Digital root of 55 × 24 =
  9. 9.Digital root of 77 × 33 =
  10. 10.Digital root of 14 × 44 =
  11. 11.Digital root of 29346 =
  12. 12.Digital root of 79226 =
  13. 13.Digital root of 90 × 51 =
  14. 14.Digital root of 95632 =
  15. 15.Digital root of 10289 =
  16. 16.Digital root of 16545 =
  17. 17.Digital root of 86102 =
  18. 18.Digital root of 69889 =
  19. 19.Digital root of 33864 =
  20. 20.Digital root of 18 × 75 =
  21. 21.Digital root of 86 × 13 =
  22. 22.Digital root of 90682 =
  23. 23.Digital root of 29 × 90 =
  24. 24.Digital root of 25 × 36 =
  25. 25.Digital root of 60290 =
  26. 26.Digital root of 62 × 84 =
  27. 27.Digital root of 57 × 57 =
  28. 28.Digital root of 55838 =
  29. 29.Digital root of 26 × 72 =
  30. 30.Digital root of 6604 =
  31. 31.Digital root of 96183 =
  32. 32.Digital root of 15398 =
  33. 33.Digital root of 89 × 80 =
  34. 34.Digital root of 59 × 58 =
  35. 35.Digital root of 66 × 14 =
  36. 36.Digital root of 98 × 53 =
  37. 37.Digital root of 75 × 80 =
  38. 38.Digital root of 96078 =
  39. 39.Digital root of 90539 =
  40. 40.Digital root of 6427 =

Answer key

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

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