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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 756 · 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 19 × 72 =
  2. 2.Digital root of 83 × 45 =
  3. 3.Digital root of 85 × 70 =
  4. 4.Digital root of 47831 =
  5. 5.Digital root of 47 × 33 =
  6. 6.Digital root of 7198 =
  7. 7.Digital root of 4059 =
  8. 8.Digital root of 76 × 68 =
  9. 9.Digital root of 65849 =
  10. 10.Digital root of 49443 =
  11. 11.Digital root of 62 × 73 =
  12. 12.Digital root of 13 × 42 =
  13. 13.Digital root of 97957 =
  14. 14.Digital root of 87 × 38 =
  15. 15.Digital root of 47392 =
  16. 16.Digital root of 78196 =
  17. 17.Digital root of 20 × 93 =
  18. 18.Digital root of 24 × 57 =
  19. 19.Digital root of 97 × 31 =
  20. 20.Digital root of 26250 =
  21. 21.Digital root of 17196 =
  22. 22.Digital root of 51705 =
  23. 23.Digital root of 79 × 84 =
  24. 24.Digital root of 98618 =
  25. 25.Digital root of 31 × 82 =
  26. 26.Digital root of 53769 =
  27. 27.Digital root of 23 × 82 =
  28. 28.Digital root of 40852 =
  29. 29.Digital root of 41 × 20 =
  30. 30.Digital root of 30857 =
  31. 31.Digital root of 56931 =
  32. 32.Digital root of 15 × 54 =
  33. 33.Digital root of 95155 =
  34. 34.Digital root of 61617 =
  35. 35.Digital root of 92934 =
  36. 36.Digital root of 53738 =
  37. 37.Digital root of 19 × 22 =
  38. 38.Digital root of 53 × 56 =
  39. 39.Digital root of 97 × 15 =
  40. 40.Digital root of 30 × 47 =

Answer key

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

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