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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 185 · 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 36 × 36 =
  2. 2.Digital root of 36 × 17 =
  3. 3.Digital root of 9267 =
  4. 4.Digital root of 51 × 61 =
  5. 5.Digital root of 25517 =
  6. 6.Digital root of 92 × 48 =
  7. 7.Digital root of 80483 =
  8. 8.Digital root of 91701 =
  9. 9.Digital root of 58950 =
  10. 10.Digital root of 15 × 92 =
  11. 11.Digital root of 36792 =
  12. 12.Digital root of 41488 =
  13. 13.Digital root of 97 × 12 =
  14. 14.Digital root of 57 × 80 =
  15. 15.Digital root of 64 × 18 =
  16. 16.Digital root of 10958 =
  17. 17.Digital root of 20144 =
  18. 18.Digital root of 41814 =
  19. 19.Digital root of 94599 =
  20. 20.Digital root of 95053 =
  21. 21.Digital root of 34 × 96 =
  22. 22.Digital root of 77 × 81 =
  23. 23.Digital root of 96710 =
  24. 24.Digital root of 74 × 36 =
  25. 25.Digital root of 97 × 99 =
  26. 26.Digital root of 51 × 76 =
  27. 27.Digital root of 98952 =
  28. 28.Digital root of 70096 =
  29. 29.Digital root of 68402 =
  30. 30.Digital root of 9051 =
  31. 31.Digital root of 90 × 49 =
  32. 32.Digital root of 47974 =
  33. 33.Digital root of 93115 =
  34. 34.Digital root of 64264 =
  35. 35.Digital root of 67 × 47 =
  36. 36.Digital root of 92 × 45 =
  37. 37.Digital root of 79585 =
  38. 38.Digital root of 76 × 53 =
  39. 39.Digital root of 21149 =
  40. 40.Digital root of 81279 =

Answer key

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

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