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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 2 · 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 81842 =
  2. 2.Digital root of 32572 =
  3. 3.Digital root of 74217 =
  4. 4.Digital root of 82 × 42 =
  5. 5.Digital root of 20 × 59 =
  6. 6.Digital root of 5768 =
  7. 7.Digital root of 78122 =
  8. 8.Digital root of 52 × 38 =
  9. 9.Digital root of 59632 =
  10. 10.Digital root of 95957 =
  11. 11.Digital root of 66 × 90 =
  12. 12.Digital root of 71326 =
  13. 13.Digital root of 67 × 74 =
  14. 14.Digital root of 32778 =
  15. 15.Digital root of 28 × 21 =
  16. 16.Digital root of 48 × 70 =
  17. 17.Digital root of 45 × 84 =
  18. 18.Digital root of 36 × 61 =
  19. 19.Digital root of 70 × 45 =
  20. 20.Digital root of 56293 =
  21. 21.Digital root of 76 × 30 =
  22. 22.Digital root of 43 × 36 =
  23. 23.Digital root of 48507 =
  24. 24.Digital root of 79168 =
  25. 25.Digital root of 36467 =
  26. 26.Digital root of 84 × 48 =
  27. 27.Digital root of 22171 =
  28. 28.Digital root of 71 × 44 =
  29. 29.Digital root of 14 × 72 =
  30. 30.Digital root of 3244 =
  31. 31.Digital root of 79 × 58 =
  32. 32.Digital root of 20046 =
  33. 33.Digital root of 78 × 49 =
  34. 34.Digital root of 83 × 77 =
  35. 35.Digital root of 51 × 65 =
  36. 36.Digital root of 33 × 53 =
  37. 37.Digital root of 19430 =
  38. 38.Digital root of 31263 =
  39. 39.Digital root of 27944 =
  40. 40.Digital root of 52 × 46 =

Answer key

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

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