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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 156 · 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 71007 =
  2. 2.Digital root of 30030 =
  3. 3.Digital root of 90 × 76 =
  4. 4.Digital root of 15930 =
  5. 5.Digital root of 42 × 53 =
  6. 6.Digital root of 85 × 14 =
  7. 7.Digital root of 23 × 30 =
  8. 8.Digital root of 49884 =
  9. 9.Digital root of 66363 =
  10. 10.Digital root of 15 × 32 =
  11. 11.Digital root of 72817 =
  12. 12.Digital root of 26 × 24 =
  13. 13.Digital root of 81 × 57 =
  14. 14.Digital root of 76874 =
  15. 15.Digital root of 52175 =
  16. 16.Digital root of 58332 =
  17. 17.Digital root of 33 × 67 =
  18. 18.Digital root of 29959 =
  19. 19.Digital root of 71 × 63 =
  20. 20.Digital root of 26 × 94 =
  21. 21.Digital root of 12448 =
  22. 22.Digital root of 35853 =
  23. 23.Digital root of 66 × 26 =
  24. 24.Digital root of 14758 =
  25. 25.Digital root of 14084 =
  26. 26.Digital root of 83149 =
  27. 27.Digital root of 97 × 68 =
  28. 28.Digital root of 27 × 47 =
  29. 29.Digital root of 82 × 37 =
  30. 30.Digital root of 66 × 54 =
  31. 31.Digital root of 84 × 74 =
  32. 32.Digital root of 89266 =
  33. 33.Digital root of 68006 =
  34. 34.Digital root of 18 × 61 =
  35. 35.Digital root of 82 × 88 =
  36. 36.Digital root of 81502 =
  37. 37.Digital root of 51391 =
  38. 38.Digital root of 96 × 86 =
  39. 39.Digital root of 86797 =
  40. 40.Digital root of 25698 =

Answer key

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

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