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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 636 · 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 25 × 79 =
  2. 2.Digital root of 29258 =
  3. 3.Digital root of 12035 =
  4. 4.Digital root of 36945 =
  5. 5.Digital root of 57251 =
  6. 6.Digital root of 51 × 31 =
  7. 7.Digital root of 94 × 60 =
  8. 8.Digital root of 50 × 92 =
  9. 9.Digital root of 98 × 83 =
  10. 10.Digital root of 20031 =
  11. 11.Digital root of 63012 =
  12. 12.Digital root of 4806 =
  13. 13.Digital root of 17442 =
  14. 14.Digital root of 186 =
  15. 15.Digital root of 15847 =
  16. 16.Digital root of 48 × 13 =
  17. 17.Digital root of 34743 =
  18. 18.Digital root of 63297 =
  19. 19.Digital root of 40 × 51 =
  20. 20.Digital root of 78007 =
  21. 21.Digital root of 26835 =
  22. 22.Digital root of 13878 =
  23. 23.Digital root of 60 × 27 =
  24. 24.Digital root of 30 × 35 =
  25. 25.Digital root of 61 × 98 =
  26. 26.Digital root of 98 × 26 =
  27. 27.Digital root of 62 × 41 =
  28. 28.Digital root of 90812 =
  29. 29.Digital root of 57 × 14 =
  30. 30.Digital root of 94381 =
  31. 31.Digital root of 92 × 67 =
  32. 32.Digital root of 65 × 64 =
  33. 33.Digital root of 59561 =
  34. 34.Digital root of 53 × 97 =
  35. 35.Digital root of 40 × 79 =
  36. 36.Digital root of 34738 =
  37. 37.Digital root of 96 × 99 =
  38. 38.Digital root of 95345 =
  39. 39.Digital root of 92933 =
  40. 40.Digital root of 73454 =

Answer key

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

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