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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 536 · 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 83 × 25 =
  2. 2.Digital root of 11420 =
  3. 3.Digital root of 11965 =
  4. 4.Digital root of 13401 =
  5. 5.Digital root of 74 × 22 =
  6. 6.Digital root of 3739 =
  7. 7.Digital root of 79 × 20 =
  8. 8.Digital root of 64 × 17 =
  9. 9.Digital root of 93816 =
  10. 10.Digital root of 91 × 53 =
  11. 11.Digital root of 34362 =
  12. 12.Digital root of 82 × 77 =
  13. 13.Digital root of 67105 =
  14. 14.Digital root of 85 × 22 =
  15. 15.Digital root of 25 × 30 =
  16. 16.Digital root of 49 × 68 =
  17. 17.Digital root of 94 × 28 =
  18. 18.Digital root of 34 × 34 =
  19. 19.Digital root of 76 × 22 =
  20. 20.Digital root of 63 × 40 =
  21. 21.Digital root of 34 × 81 =
  22. 22.Digital root of 35 × 13 =
  23. 23.Digital root of 60 × 67 =
  24. 24.Digital root of 56 × 82 =
  25. 25.Digital root of 59 × 47 =
  26. 26.Digital root of 69 × 76 =
  27. 27.Digital root of 49383 =
  28. 28.Digital root of 49443 =
  29. 29.Digital root of 14087 =
  30. 30.Digital root of 73 × 31 =
  31. 31.Digital root of 34322 =
  32. 32.Digital root of 15735 =
  33. 33.Digital root of 39106 =
  34. 34.Digital root of 47 × 23 =
  35. 35.Digital root of 60099 =
  36. 36.Digital root of 78 × 18 =
  37. 37.Digital root of 22 × 34 =
  38. 38.Digital root of 78442 =
  39. 39.Digital root of 92 × 96 =
  40. 40.Digital root of 19648 =

Answer key

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

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