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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 419 · 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 26 × 61 =
  2. 2.Digital root of 28629 =
  3. 3.Digital root of 84585 =
  4. 4.Digital root of 33 × 43 =
  5. 5.Digital root of 93278 =
  6. 6.Digital root of 66 × 15 =
  7. 7.Digital root of 90 × 36 =
  8. 8.Digital root of 35 × 52 =
  9. 9.Digital root of 91 × 49 =
  10. 10.Digital root of 57 × 58 =
  11. 11.Digital root of 79497 =
  12. 12.Digital root of 19246 =
  13. 13.Digital root of 3833 =
  14. 14.Digital root of 58 × 71 =
  15. 15.Digital root of 33068 =
  16. 16.Digital root of 15009 =
  17. 17.Digital root of 91657 =
  18. 18.Digital root of 89 × 49 =
  19. 19.Digital root of 74 × 37 =
  20. 20.Digital root of 13078 =
  21. 21.Digital root of 42552 =
  22. 22.Digital root of 56812 =
  23. 23.Digital root of 65796 =
  24. 24.Digital root of 51243 =
  25. 25.Digital root of 71399 =
  26. 26.Digital root of 34376 =
  27. 27.Digital root of 44 × 27 =
  28. 28.Digital root of 49 × 78 =
  29. 29.Digital root of 14967 =
  30. 30.Digital root of 1286 =
  31. 31.Digital root of 95 × 12 =
  32. 32.Digital root of 58879 =
  33. 33.Digital root of 88 × 72 =
  34. 34.Digital root of 90443 =
  35. 35.Digital root of 58702 =
  36. 36.Digital root of 28038 =
  37. 37.Digital root of 24 × 44 =
  38. 38.Digital root of 77756 =
  39. 39.Digital root of 51 × 27 =
  40. 40.Digital root of 39571 =

Answer key

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

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