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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 211 · 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 93186 =
  2. 2.Digital root of 9853 =
  3. 3.Digital root of 4695 =
  4. 4.Digital root of 31 × 62 =
  5. 5.Digital root of 79938 =
  6. 6.Digital root of 35648 =
  7. 7.Digital root of 29 × 33 =
  8. 8.Digital root of 13 × 55 =
  9. 9.Digital root of 12 × 87 =
  10. 10.Digital root of 98 × 70 =
  11. 11.Digital root of 26 × 67 =
  12. 12.Digital root of 41 × 81 =
  13. 13.Digital root of 28861 =
  14. 14.Digital root of 72 × 42 =
  15. 15.Digital root of 15076 =
  16. 16.Digital root of 40 × 37 =
  17. 17.Digital root of 45142 =
  18. 18.Digital root of 25 × 50 =
  19. 19.Digital root of 79918 =
  20. 20.Digital root of 42152 =
  21. 21.Digital root of 20878 =
  22. 22.Digital root of 67145 =
  23. 23.Digital root of 93 × 77 =
  24. 24.Digital root of 39 × 69 =
  25. 25.Digital root of 69 × 89 =
  26. 26.Digital root of 89945 =
  27. 27.Digital root of 65908 =
  28. 28.Digital root of 92932 =
  29. 29.Digital root of 52723 =
  30. 30.Digital root of 14834 =
  31. 31.Digital root of 48 × 37 =
  32. 32.Digital root of 54 × 91 =
  33. 33.Digital root of 96710 =
  34. 34.Digital root of 22 × 28 =
  35. 35.Digital root of 40 × 36 =
  36. 36.Digital root of 92262 =
  37. 37.Digital root of 64225 =
  38. 38.Digital root of 12 × 96 =
  39. 39.Digital root of 40680 =
  40. 40.Digital root of 84077 =

Answer key

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

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