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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 348 · 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 69 × 20 =
  2. 2.Digital root of 27325 =
  3. 3.Digital root of 82770 =
  4. 4.Digital root of 92 × 23 =
  5. 5.Digital root of 80 × 93 =
  6. 6.Digital root of 16 × 29 =
  7. 7.Digital root of 78615 =
  8. 8.Digital root of 69 × 30 =
  9. 9.Digital root of 94209 =
  10. 10.Digital root of 20 × 23 =
  11. 11.Digital root of 84297 =
  12. 12.Digital root of 20 × 49 =
  13. 13.Digital root of 47521 =
  14. 14.Digital root of 45445 =
  15. 15.Digital root of 54091 =
  16. 16.Digital root of 19 × 34 =
  17. 17.Digital root of 9844 =
  18. 18.Digital root of 32 × 94 =
  19. 19.Digital root of 66 × 76 =
  20. 20.Digital root of 61 × 74 =
  21. 21.Digital root of 98787 =
  22. 22.Digital root of 17830 =
  23. 23.Digital root of 21 × 21 =
  24. 24.Digital root of 31 × 99 =
  25. 25.Digital root of 9529 =
  26. 26.Digital root of 22324 =
  27. 27.Digital root of 60299 =
  28. 28.Digital root of 39986 =
  29. 29.Digital root of 13 × 87 =
  30. 30.Digital root of 57477 =
  31. 31.Digital root of 21130 =
  32. 32.Digital root of 72226 =
  33. 33.Digital root of 68 × 83 =
  34. 34.Digital root of 93 × 30 =
  35. 35.Digital root of 11169 =
  36. 36.Digital root of 5903 =
  37. 37.Digital root of 64198 =
  38. 38.Digital root of 40 × 84 =
  39. 39.Digital root of 952 =
  40. 40.Digital root of 42479 =

Answer key

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

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