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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 190 · 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 28 × 58 =
  2. 2.Digital root of 46475 =
  3. 3.Digital root of 24807 =
  4. 4.Digital root of 86 × 69 =
  5. 5.Digital root of 83624 =
  6. 6.Digital root of 20226 =
  7. 7.Digital root of 45 × 40 =
  8. 8.Digital root of 24437 =
  9. 9.Digital root of 79 × 98 =
  10. 10.Digital root of 94 × 47 =
  11. 11.Digital root of 74468 =
  12. 12.Digital root of 7043 =
  13. 13.Digital root of 34 × 22 =
  14. 14.Digital root of 21717 =
  15. 15.Digital root of 91142 =
  16. 16.Digital root of 9934 =
  17. 17.Digital root of 53 × 24 =
  18. 18.Digital root of 50251 =
  19. 19.Digital root of 20097 =
  20. 20.Digital root of 76203 =
  21. 21.Digital root of 21 × 41 =
  22. 22.Digital root of 71 × 84 =
  23. 23.Digital root of 4339 =
  24. 24.Digital root of 29549 =
  25. 25.Digital root of 35936 =
  26. 26.Digital root of 26 × 38 =
  27. 27.Digital root of 47920 =
  28. 28.Digital root of 67 × 16 =
  29. 29.Digital root of 83241 =
  30. 30.Digital root of 1979 =
  31. 31.Digital root of 29 × 59 =
  32. 32.Digital root of 63 × 78 =
  33. 33.Digital root of 73 × 65 =
  34. 34.Digital root of 91 × 95 =
  35. 35.Digital root of 9298 =
  36. 36.Digital root of 22012 =
  37. 37.Digital root of 94 × 73 =
  38. 38.Digital root of 9399 =
  39. 39.Digital root of 12172 =
  40. 40.Digital root of 36915 =

Answer key

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

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