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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 275 · 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 13123 =
  2. 2.Digital root of 95411 =
  3. 3.Digital root of 29 × 36 =
  4. 4.Digital root of 47885 =
  5. 5.Digital root of 12 × 84 =
  6. 6.Digital root of 43 × 70 =
  7. 7.Digital root of 21 × 53 =
  8. 8.Digital root of 14 × 95 =
  9. 9.Digital root of 96240 =
  10. 10.Digital root of 15 × 98 =
  11. 11.Digital root of 96969 =
  12. 12.Digital root of 53 × 71 =
  13. 13.Digital root of 9415 =
  14. 14.Digital root of 12366 =
  15. 15.Digital root of 63 × 77 =
  16. 16.Digital root of 20 × 80 =
  17. 17.Digital root of 36908 =
  18. 18.Digital root of 80 × 78 =
  19. 19.Digital root of 79 × 26 =
  20. 20.Digital root of 67 × 21 =
  21. 21.Digital root of 63920 =
  22. 22.Digital root of 31 × 19 =
  23. 23.Digital root of 58067 =
  24. 24.Digital root of 52552 =
  25. 25.Digital root of 55318 =
  26. 26.Digital root of 80237 =
  27. 27.Digital root of 70982 =
  28. 28.Digital root of 26561 =
  29. 29.Digital root of 71 × 22 =
  30. 30.Digital root of 54 × 71 =
  31. 31.Digital root of 33 × 19 =
  32. 32.Digital root of 93279 =
  33. 33.Digital root of 94 × 50 =
  34. 34.Digital root of 79 × 32 =
  35. 35.Digital root of 14497 =
  36. 36.Digital root of 91 × 40 =
  37. 37.Digital root of 20 × 71 =
  38. 38.Digital root of 87854 =
  39. 39.Digital root of 79675 =
  40. 40.Digital root of 32010 =

Answer key

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

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