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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 643 · 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 45299 =
  2. 2.Digital root of 14170 =
  3. 3.Digital root of 87195 =
  4. 4.Digital root of 61897 =
  5. 5.Digital root of 70658 =
  6. 6.Digital root of 40 × 26 =
  7. 7.Digital root of 51 × 24 =
  8. 8.Digital root of 65 × 19 =
  9. 9.Digital root of 43 × 33 =
  10. 10.Digital root of 45 × 25 =
  11. 11.Digital root of 6123 =
  12. 12.Digital root of 32918 =
  13. 13.Digital root of 56233 =
  14. 14.Digital root of 95 × 65 =
  15. 15.Digital root of 36110 =
  16. 16.Digital root of 44 × 49 =
  17. 17.Digital root of 3826 =
  18. 18.Digital root of 77 × 93 =
  19. 19.Digital root of 99 × 98 =
  20. 20.Digital root of 61988 =
  21. 21.Digital root of 8036 =
  22. 22.Digital root of 24937 =
  23. 23.Digital root of 53361 =
  24. 24.Digital root of 18 × 79 =
  25. 25.Digital root of 30 × 95 =
  26. 26.Digital root of 10048 =
  27. 27.Digital root of 99888 =
  28. 28.Digital root of 59423 =
  29. 29.Digital root of 91 × 28 =
  30. 30.Digital root of 29 × 27 =
  31. 31.Digital root of 96 × 14 =
  32. 32.Digital root of 44861 =
  33. 33.Digital root of 92 × 47 =
  34. 34.Digital root of 78486 =
  35. 35.Digital root of 63546 =
  36. 36.Digital root of 15 × 46 =
  37. 37.Digital root of 31 × 82 =
  38. 38.Digital root of 32 × 94 =
  39. 39.Digital root of 50 × 81 =
  40. 40.Digital root of 79 × 40 =

Answer key

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

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