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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 326 · 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 76358 =
  2. 2.Digital root of 61489 =
  3. 3.Digital root of 69 × 57 =
  4. 4.Digital root of 17 × 23 =
  5. 5.Digital root of 20 × 23 =
  6. 6.Digital root of 41421 =
  7. 7.Digital root of 74 × 47 =
  8. 8.Digital root of 15 × 59 =
  9. 9.Digital root of 66023 =
  10. 10.Digital root of 49 × 51 =
  11. 11.Digital root of 4180 =
  12. 12.Digital root of 30043 =
  13. 13.Digital root of 67 × 72 =
  14. 14.Digital root of 70238 =
  15. 15.Digital root of 28742 =
  16. 16.Digital root of 34 × 72 =
  17. 17.Digital root of 87163 =
  18. 18.Digital root of 39399 =
  19. 19.Digital root of 39856 =
  20. 20.Digital root of 57306 =
  21. 21.Digital root of 57 × 58 =
  22. 22.Digital root of 60020 =
  23. 23.Digital root of 87 × 92 =
  24. 24.Digital root of 4797 =
  25. 25.Digital root of 33 × 64 =
  26. 26.Digital root of 87 × 64 =
  27. 27.Digital root of 18 × 44 =
  28. 28.Digital root of 17997 =
  29. 29.Digital root of 70 × 98 =
  30. 30.Digital root of 28 × 42 =
  31. 31.Digital root of 48467 =
  32. 32.Digital root of 71163 =
  33. 33.Digital root of 43 × 38 =
  34. 34.Digital root of 54468 =
  35. 35.Digital root of 66 × 29 =
  36. 36.Digital root of 63 × 58 =
  37. 37.Digital root of 35560 =
  38. 38.Digital root of 35 × 96 =
  39. 39.Digital root of 25 × 90 =
  40. 40.Digital root of 82404 =

Answer key

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

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