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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 186 · 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 90976 =
  2. 2.Digital root of 86428 =
  3. 3.Digital root of 24 × 30 =
  4. 4.Digital root of 86 × 23 =
  5. 5.Digital root of 81743 =
  6. 6.Digital root of 12552 =
  7. 7.Digital root of 92 × 59 =
  8. 8.Digital root of 14690 =
  9. 9.Digital root of 12 × 53 =
  10. 10.Digital root of 12 × 53 =
  11. 11.Digital root of 6430 =
  12. 12.Digital root of 49 × 69 =
  13. 13.Digital root of 12 × 83 =
  14. 14.Digital root of 72228 =
  15. 15.Digital root of 62383 =
  16. 16.Digital root of 90 × 77 =
  17. 17.Digital root of 12 × 26 =
  18. 18.Digital root of 23 × 29 =
  19. 19.Digital root of 82 × 38 =
  20. 20.Digital root of 94219 =
  21. 21.Digital root of 52 × 49 =
  22. 22.Digital root of 67644 =
  23. 23.Digital root of 81599 =
  24. 24.Digital root of 53062 =
  25. 25.Digital root of 57211 =
  26. 26.Digital root of 21699 =
  27. 27.Digital root of 75 × 27 =
  28. 28.Digital root of 66 × 56 =
  29. 29.Digital root of 19 × 31 =
  30. 30.Digital root of 29983 =
  31. 31.Digital root of 69953 =
  32. 32.Digital root of 72 × 86 =
  33. 33.Digital root of 45152 =
  34. 34.Digital root of 29451 =
  35. 35.Digital root of 94268 =
  36. 36.Digital root of 16000 =
  37. 37.Digital root of 98 × 53 =
  38. 38.Digital root of 73 × 75 =
  39. 39.Digital root of 99 × 30 =
  40. 40.Digital root of 68515 =

Answer key

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

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