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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 589 · 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 31 × 96 =
  2. 2.Digital root of 49421 =
  3. 3.Digital root of 71108 =
  4. 4.Digital root of 41266 =
  5. 5.Digital root of 23 × 28 =
  6. 6.Digital root of 70263 =
  7. 7.Digital root of 35 × 45 =
  8. 8.Digital root of 9882 =
  9. 9.Digital root of 33863 =
  10. 10.Digital root of 16 × 61 =
  11. 11.Digital root of 94028 =
  12. 12.Digital root of 15 × 35 =
  13. 13.Digital root of 3356 =
  14. 14.Digital root of 70 × 14 =
  15. 15.Digital root of 48028 =
  16. 16.Digital root of 26246 =
  17. 17.Digital root of 4705 =
  18. 18.Digital root of 91 × 31 =
  19. 19.Digital root of 99 × 23 =
  20. 20.Digital root of 15815 =
  21. 21.Digital root of 514 =
  22. 22.Digital root of 93121 =
  23. 23.Digital root of 92707 =
  24. 24.Digital root of 30 × 27 =
  25. 25.Digital root of 16369 =
  26. 26.Digital root of 84370 =
  27. 27.Digital root of 63 × 68 =
  28. 28.Digital root of 90405 =
  29. 29.Digital root of 27 × 14 =
  30. 30.Digital root of 3653 =
  31. 31.Digital root of 35692 =
  32. 32.Digital root of 92 × 44 =
  33. 33.Digital root of 26 × 32 =
  34. 34.Digital root of 40276 =
  35. 35.Digital root of 47069 =
  36. 36.Digital root of 24945 =
  37. 37.Digital root of 22 × 43 =
  38. 38.Digital root of 92 × 72 =
  39. 39.Digital root of 60 × 85 =
  40. 40.Digital root of 89 × 68 =

Answer key

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

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