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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 595 · 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 73011 =
  2. 2.Digital root of 27661 =
  3. 3.Digital root of 54 × 40 =
  4. 4.Digital root of 98 × 59 =
  5. 5.Digital root of 55 × 65 =
  6. 6.Digital root of 86870 =
  7. 7.Digital root of 78 × 63 =
  8. 8.Digital root of 65 × 90 =
  9. 9.Digital root of 64781 =
  10. 10.Digital root of 43 × 30 =
  11. 11.Digital root of 17 × 26 =
  12. 12.Digital root of 14 × 43 =
  13. 13.Digital root of 26 × 21 =
  14. 14.Digital root of 64728 =
  15. 15.Digital root of 69 × 81 =
  16. 16.Digital root of 35833 =
  17. 17.Digital root of 62 × 83 =
  18. 18.Digital root of 87349 =
  19. 19.Digital root of 40020 =
  20. 20.Digital root of 79 × 51 =
  21. 21.Digital root of 29698 =
  22. 22.Digital root of 70 × 30 =
  23. 23.Digital root of 75656 =
  24. 24.Digital root of 82 × 23 =
  25. 25.Digital root of 1726 =
  26. 26.Digital root of 22 × 76 =
  27. 27.Digital root of 89182 =
  28. 28.Digital root of 84 × 19 =
  29. 29.Digital root of 86715 =
  30. 30.Digital root of 15 × 81 =
  31. 31.Digital root of 43565 =
  32. 32.Digital root of 37016 =
  33. 33.Digital root of 81102 =
  34. 34.Digital root of 73 × 35 =
  35. 35.Digital root of 84 × 31 =
  36. 36.Digital root of 47981 =
  37. 37.Digital root of 72262 =
  38. 38.Digital root of 62207 =
  39. 39.Digital root of 82 × 85 =
  40. 40.Digital root of 15 × 85 =

Answer key

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

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