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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 808 · 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 10989 =
  2. 2.Digital root of 75476 =
  3. 3.Digital root of 51 × 13 =
  4. 4.Digital root of 81565 =
  5. 5.Digital root of 35 × 55 =
  6. 6.Digital root of 20436 =
  7. 7.Digital root of 73212 =
  8. 8.Digital root of 71 × 38 =
  9. 9.Digital root of 87639 =
  10. 10.Digital root of 16748 =
  11. 11.Digital root of 82 × 25 =
  12. 12.Digital root of 32258 =
  13. 13.Digital root of 42095 =
  14. 14.Digital root of 69700 =
  15. 15.Digital root of 89 × 21 =
  16. 16.Digital root of 32728 =
  17. 17.Digital root of 94575 =
  18. 18.Digital root of 90583 =
  19. 19.Digital root of 77286 =
  20. 20.Digital root of 45 × 19 =
  21. 21.Digital root of 75 × 72 =
  22. 22.Digital root of 26707 =
  23. 23.Digital root of 36037 =
  24. 24.Digital root of 46 × 46 =
  25. 25.Digital root of 87 × 57 =
  26. 26.Digital root of 96700 =
  27. 27.Digital root of 80551 =
  28. 28.Digital root of 83 × 24 =
  29. 29.Digital root of 57670 =
  30. 30.Digital root of 16 × 21 =
  31. 31.Digital root of 84 × 61 =
  32. 32.Digital root of 48 × 73 =
  33. 33.Digital root of 37 × 69 =
  34. 34.Digital root of 75232 =
  35. 35.Digital root of 1491 =
  36. 36.Digital root of 86188 =
  37. 37.Digital root of 42345 =
  38. 38.Digital root of 19 × 47 =
  39. 39.Digital root of 23644 =
  40. 40.Digital root of 79839 =

Answer key

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

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