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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 401 · 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 57766 =
  2. 2.Digital root of 50311 =
  3. 3.Digital root of 70218 =
  4. 4.Digital root of 3602 =
  5. 5.Digital root of 97 × 65 =
  6. 6.Digital root of 67449 =
  7. 7.Digital root of 23170 =
  8. 8.Digital root of 17 × 21 =
  9. 9.Digital root of 55 × 96 =
  10. 10.Digital root of 74622 =
  11. 11.Digital root of 7067 =
  12. 12.Digital root of 47 × 46 =
  13. 13.Digital root of 64 × 42 =
  14. 14.Digital root of 43271 =
  15. 15.Digital root of 67309 =
  16. 16.Digital root of 83 × 74 =
  17. 17.Digital root of 16 × 30 =
  18. 18.Digital root of 90 × 69 =
  19. 19.Digital root of 32 × 44 =
  20. 20.Digital root of 62 × 61 =
  21. 21.Digital root of 89338 =
  22. 22.Digital root of 15 × 86 =
  23. 23.Digital root of 57 × 42 =
  24. 24.Digital root of 15987 =
  25. 25.Digital root of 88179 =
  26. 26.Digital root of 59 × 82 =
  27. 27.Digital root of 45 × 78 =
  28. 28.Digital root of 84 × 74 =
  29. 29.Digital root of 35108 =
  30. 30.Digital root of 90596 =
  31. 31.Digital root of 98518 =
  32. 32.Digital root of 95756 =
  33. 33.Digital root of 57 × 38 =
  34. 34.Digital root of 21 × 48 =
  35. 35.Digital root of 46811 =
  36. 36.Digital root of 66 × 92 =
  37. 37.Digital root of 46 × 59 =
  38. 38.Digital root of 34 × 25 =
  39. 39.Digital root of 36 × 33 =
  40. 40.Digital root of 12908 =

Answer key

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

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