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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 235 · 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 16 × 95 =
  2. 2.Digital root of 72284 =
  3. 3.Digital root of 7166 =
  4. 4.Digital root of 27 × 38 =
  5. 5.Digital root of 24170 =
  6. 6.Digital root of 61 × 31 =
  7. 7.Digital root of 85 × 38 =
  8. 8.Digital root of 58634 =
  9. 9.Digital root of 89 × 29 =
  10. 10.Digital root of 53 × 37 =
  11. 11.Digital root of 84594 =
  12. 12.Digital root of 14582 =
  13. 13.Digital root of 34 × 47 =
  14. 14.Digital root of 99177 =
  15. 15.Digital root of 29 × 37 =
  16. 16.Digital root of 40 × 25 =
  17. 17.Digital root of 93171 =
  18. 18.Digital root of 12638 =
  19. 19.Digital root of 69 × 75 =
  20. 20.Digital root of 62931 =
  21. 21.Digital root of 81269 =
  22. 22.Digital root of 80 × 43 =
  23. 23.Digital root of 96888 =
  24. 24.Digital root of 80 × 48 =
  25. 25.Digital root of 1277 =
  26. 26.Digital root of 72 × 13 =
  27. 27.Digital root of 82 × 89 =
  28. 28.Digital root of 24 × 28 =
  29. 29.Digital root of 37804 =
  30. 30.Digital root of 93 × 73 =
  31. 31.Digital root of 38019 =
  32. 32.Digital root of 216 =
  33. 33.Digital root of 94 × 38 =
  34. 34.Digital root of 48508 =
  35. 35.Digital root of 78 × 45 =
  36. 36.Digital root of 67 × 22 =
  37. 37.Digital root of 77520 =
  38. 38.Digital root of 95007 =
  39. 39.Digital root of 91 × 43 =
  40. 40.Digital root of 91 × 90 =

Answer key

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

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