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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 910 · 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 9979 =
  2. 2.Digital root of 50 × 46 =
  3. 3.Digital root of 19 × 14 =
  4. 4.Digital root of 78 × 76 =
  5. 5.Digital root of 83 × 36 =
  6. 6.Digital root of 2219 =
  7. 7.Digital root of 74 × 65 =
  8. 8.Digital root of 22 × 39 =
  9. 9.Digital root of 79 × 49 =
  10. 10.Digital root of 45 × 49 =
  11. 11.Digital root of 47 × 98 =
  12. 12.Digital root of 97 × 52 =
  13. 13.Digital root of 26207 =
  14. 14.Digital root of 42197 =
  15. 15.Digital root of 86 × 46 =
  16. 16.Digital root of 65 × 61 =
  17. 17.Digital root of 30 × 87 =
  18. 18.Digital root of 34 × 96 =
  19. 19.Digital root of 46366 =
  20. 20.Digital root of 81258 =
  21. 21.Digital root of 32 × 70 =
  22. 22.Digital root of 91 × 74 =
  23. 23.Digital root of 88 × 79 =
  24. 24.Digital root of 47439 =
  25. 25.Digital root of 56 × 67 =
  26. 26.Digital root of 27422 =
  27. 27.Digital root of 66961 =
  28. 28.Digital root of 59088 =
  29. 29.Digital root of 60148 =
  30. 30.Digital root of 84 × 99 =
  31. 31.Digital root of 39858 =
  32. 32.Digital root of 22704 =
  33. 33.Digital root of 73129 =
  34. 34.Digital root of 54 × 82 =
  35. 35.Digital root of 18 × 78 =
  36. 36.Digital root of 16 × 89 =
  37. 37.Digital root of 49861 =
  38. 38.Digital root of 43 × 69 =
  39. 39.Digital root of 35 × 71 =
  40. 40.Digital root of 23746 =

Answer key

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

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