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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 555 · 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 79 × 25 =
  2. 2.Digital root of 48570 =
  3. 3.Digital root of 90 × 32 =
  4. 4.Digital root of 17470 =
  5. 5.Digital root of 16 × 61 =
  6. 6.Digital root of 64229 =
  7. 7.Digital root of 90 × 48 =
  8. 8.Digital root of 26101 =
  9. 9.Digital root of 12535 =
  10. 10.Digital root of 31085 =
  11. 11.Digital root of 19320 =
  12. 12.Digital root of 44 × 70 =
  13. 13.Digital root of 36 × 31 =
  14. 14.Digital root of 13915 =
  15. 15.Digital root of 59811 =
  16. 16.Digital root of 82 × 33 =
  17. 17.Digital root of 82 × 14 =
  18. 18.Digital root of 18765 =
  19. 19.Digital root of 80769 =
  20. 20.Digital root of 57180 =
  21. 21.Digital root of 80 × 63 =
  22. 22.Digital root of 92 × 66 =
  23. 23.Digital root of 33420 =
  24. 24.Digital root of 14 × 25 =
  25. 25.Digital root of 91131 =
  26. 26.Digital root of 54860 =
  27. 27.Digital root of 71 × 67 =
  28. 28.Digital root of 93758 =
  29. 29.Digital root of 64 × 27 =
  30. 30.Digital root of 79778 =
  31. 31.Digital root of 49365 =
  32. 32.Digital root of 94876 =
  33. 33.Digital root of 13 × 79 =
  34. 34.Digital root of 43049 =
  35. 35.Digital root of 65 × 18 =
  36. 36.Digital root of 13 × 30 =
  37. 37.Digital root of 36918 =
  38. 38.Digital root of 95770 =
  39. 39.Digital root of 42 × 34 =
  40. 40.Digital root of 48259 =

Answer key

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

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