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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 881 · 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 68 × 16 =
  2. 2.Digital root of 28314 =
  3. 3.Digital root of 75 × 84 =
  4. 4.Digital root of 38 × 49 =
  5. 5.Digital root of 53 × 32 =
  6. 6.Digital root of 34 × 77 =
  7. 7.Digital root of 13 × 21 =
  8. 8.Digital root of 60782 =
  9. 9.Digital root of 28 × 75 =
  10. 10.Digital root of 45100 =
  11. 11.Digital root of 72 × 63 =
  12. 12.Digital root of 24233 =
  13. 13.Digital root of 12097 =
  14. 14.Digital root of 15 × 72 =
  15. 15.Digital root of 62 × 14 =
  16. 16.Digital root of 69392 =
  17. 17.Digital root of 79367 =
  18. 18.Digital root of 92 × 33 =
  19. 19.Digital root of 4808 =
  20. 20.Digital root of 17 × 48 =
  21. 21.Digital root of 42659 =
  22. 22.Digital root of 99091 =
  23. 23.Digital root of 95 × 61 =
  24. 24.Digital root of 69 × 47 =
  25. 25.Digital root of 35700 =
  26. 26.Digital root of 86 × 38 =
  27. 27.Digital root of 63 × 38 =
  28. 28.Digital root of 67999 =
  29. 29.Digital root of 74247 =
  30. 30.Digital root of 47 × 27 =
  31. 31.Digital root of 2861 =
  32. 32.Digital root of 48696 =
  33. 33.Digital root of 70225 =
  34. 34.Digital root of 60 × 37 =
  35. 35.Digital root of 66 × 74 =
  36. 36.Digital root of 19 × 17 =
  37. 37.Digital root of 40 × 78 =
  38. 38.Digital root of 68 × 12 =
  39. 39.Digital root of 73 × 77 =
  40. 40.Digital root of 54 × 84 =

Answer key

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

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