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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 434 · 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 49 × 30 =
  2. 2.Digital root of 96 × 92 =
  3. 3.Digital root of 29 × 56 =
  4. 4.Digital root of 13 × 30 =
  5. 5.Digital root of 9435 =
  6. 6.Digital root of 59205 =
  7. 7.Digital root of 84160 =
  8. 8.Digital root of 40 × 19 =
  9. 9.Digital root of 67 × 74 =
  10. 10.Digital root of 48 × 47 =
  11. 11.Digital root of 63774 =
  12. 12.Digital root of 74 × 24 =
  13. 13.Digital root of 55448 =
  14. 14.Digital root of 76 × 73 =
  15. 15.Digital root of 30 × 29 =
  16. 16.Digital root of 11448 =
  17. 17.Digital root of 93490 =
  18. 18.Digital root of 8271 =
  19. 19.Digital root of 32570 =
  20. 20.Digital root of 17737 =
  21. 21.Digital root of 9322 =
  22. 22.Digital root of 98 × 50 =
  23. 23.Digital root of 32 × 23 =
  24. 24.Digital root of 19455 =
  25. 25.Digital root of 65768 =
  26. 26.Digital root of 63539 =
  27. 27.Digital root of 34 × 68 =
  28. 28.Digital root of 90 × 64 =
  29. 29.Digital root of 61626 =
  30. 30.Digital root of 57946 =
  31. 31.Digital root of 92 × 22 =
  32. 32.Digital root of 62654 =
  33. 33.Digital root of 84073 =
  34. 34.Digital root of 76447 =
  35. 35.Digital root of 50775 =
  36. 36.Digital root of 97 × 33 =
  37. 37.Digital root of 55707 =
  38. 38.Digital root of 37 × 35 =
  39. 39.Digital root of 75434 =
  40. 40.Digital root of 18675 =

Answer key

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

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