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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 138 · 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 32478 =
  2. 2.Digital root of 58 × 41 =
  3. 3.Digital root of 76229 =
  4. 4.Digital root of 97176 =
  5. 5.Digital root of 17 × 35 =
  6. 6.Digital root of 25876 =
  7. 7.Digital root of 58 × 96 =
  8. 8.Digital root of 96 × 39 =
  9. 9.Digital root of 70 × 78 =
  10. 10.Digital root of 12708 =
  11. 11.Digital root of 65 × 62 =
  12. 12.Digital root of 44346 =
  13. 13.Digital root of 24190 =
  14. 14.Digital root of 18 × 83 =
  15. 15.Digital root of 3597 =
  16. 16.Digital root of 76 × 90 =
  17. 17.Digital root of 86401 =
  18. 18.Digital root of 80683 =
  19. 19.Digital root of 78935 =
  20. 20.Digital root of 28 × 68 =
  21. 21.Digital root of 51749 =
  22. 22.Digital root of 13 × 20 =
  23. 23.Digital root of 34796 =
  24. 24.Digital root of 54 × 85 =
  25. 25.Digital root of 17 × 91 =
  26. 26.Digital root of 29 × 99 =
  27. 27.Digital root of 62 × 78 =
  28. 28.Digital root of 28432 =
  29. 29.Digital root of 4159 =
  30. 30.Digital root of 67 × 32 =
  31. 31.Digital root of 83 × 18 =
  32. 32.Digital root of 7446 =
  33. 33.Digital root of 55 × 94 =
  34. 34.Digital root of 27128 =
  35. 35.Digital root of 75148 =
  36. 36.Digital root of 39083 =
  37. 37.Digital root of 4977 =
  38. 38.Digital root of 19452 =
  39. 39.Digital root of 43098 =
  40. 40.Digital root of 72729 =

Answer key

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

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