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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 448 · 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 71 × 24 =
  2. 2.Digital root of 85798 =
  3. 3.Digital root of 28 × 64 =
  4. 4.Digital root of 94 × 13 =
  5. 5.Digital root of 70983 =
  6. 6.Digital root of 53 × 40 =
  7. 7.Digital root of 31 × 88 =
  8. 8.Digital root of 11986 =
  9. 9.Digital root of 74 × 47 =
  10. 10.Digital root of 83 × 98 =
  11. 11.Digital root of 41766 =
  12. 12.Digital root of 21 × 24 =
  13. 13.Digital root of 5374 =
  14. 14.Digital root of 97646 =
  15. 15.Digital root of 44 × 86 =
  16. 16.Digital root of 19 × 15 =
  17. 17.Digital root of 26125 =
  18. 18.Digital root of 25439 =
  19. 19.Digital root of 40941 =
  20. 20.Digital root of 97 × 45 =
  21. 21.Digital root of 27820 =
  22. 22.Digital root of 29391 =
  23. 23.Digital root of 13 × 79 =
  24. 24.Digital root of 75 × 84 =
  25. 25.Digital root of 83612 =
  26. 26.Digital root of 6250 =
  27. 27.Digital root of 37 × 19 =
  28. 28.Digital root of 59 × 99 =
  29. 29.Digital root of 36 × 56 =
  30. 30.Digital root of 5765 =
  31. 31.Digital root of 71675 =
  32. 32.Digital root of 81 × 56 =
  33. 33.Digital root of 79 × 77 =
  34. 34.Digital root of 54 × 28 =
  35. 35.Digital root of 21 × 78 =
  36. 36.Digital root of 46114 =
  37. 37.Digital root of 6632 =
  38. 38.Digital root of 85 × 27 =
  39. 39.Digital root of 35419 =
  40. 40.Digital root of 59019 =

Answer key

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

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