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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 959 · 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 13 × 30 =
  2. 2.Digital root of 75 × 83 =
  3. 3.Digital root of 57 × 80 =
  4. 4.Digital root of 81578 =
  5. 5.Digital root of 22 × 84 =
  6. 6.Digital root of 47 × 70 =
  7. 7.Digital root of 17 × 50 =
  8. 8.Digital root of 43987 =
  9. 9.Digital root of 99302 =
  10. 10.Digital root of 92702 =
  11. 11.Digital root of 98080 =
  12. 12.Digital root of 57 × 65 =
  13. 13.Digital root of 36 × 99 =
  14. 14.Digital root of 83 × 35 =
  15. 15.Digital root of 81 × 44 =
  16. 16.Digital root of 86242 =
  17. 17.Digital root of 26027 =
  18. 18.Digital root of 71 × 51 =
  19. 19.Digital root of 25 × 98 =
  20. 20.Digital root of 17071 =
  21. 21.Digital root of 49121 =
  22. 22.Digital root of 10089 =
  23. 23.Digital root of 61 × 40 =
  24. 24.Digital root of 68 × 99 =
  25. 25.Digital root of 13782 =
  26. 26.Digital root of 34 × 48 =
  27. 27.Digital root of 94 × 34 =
  28. 28.Digital root of 71 × 26 =
  29. 29.Digital root of 52618 =
  30. 30.Digital root of 17374 =
  31. 31.Digital root of 79 × 89 =
  32. 32.Digital root of 25261 =
  33. 33.Digital root of 80292 =
  34. 34.Digital root of 12 × 15 =
  35. 35.Digital root of 81044 =
  36. 36.Digital root of 12 × 70 =
  37. 37.Digital root of 26 × 98 =
  38. 38.Digital root of 42321 =
  39. 39.Digital root of 40658 =
  40. 40.Digital root of 62342 =

Answer key

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

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