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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 463 · 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 80836 =
  2. 2.Digital root of 58356 =
  3. 3.Digital root of 84907 =
  4. 4.Digital root of 76702 =
  5. 5.Digital root of 37 × 30 =
  6. 6.Digital root of 23202 =
  7. 7.Digital root of 16686 =
  8. 8.Digital root of 57 × 36 =
  9. 9.Digital root of 64959 =
  10. 10.Digital root of 35728 =
  11. 11.Digital root of 73270 =
  12. 12.Digital root of 98 × 64 =
  13. 13.Digital root of 29 × 86 =
  14. 14.Digital root of 51 × 45 =
  15. 15.Digital root of 72715 =
  16. 16.Digital root of 80 × 99 =
  17. 17.Digital root of 71 × 87 =
  18. 18.Digital root of 32283 =
  19. 19.Digital root of 96 × 32 =
  20. 20.Digital root of 37 × 33 =
  21. 21.Digital root of 23116 =
  22. 22.Digital root of 53391 =
  23. 23.Digital root of 67 × 40 =
  24. 24.Digital root of 78 × 83 =
  25. 25.Digital root of 37177 =
  26. 26.Digital root of 48184 =
  27. 27.Digital root of 98535 =
  28. 28.Digital root of 98398 =
  29. 29.Digital root of 6400 =
  30. 30.Digital root of 65154 =
  31. 31.Digital root of 23 × 75 =
  32. 32.Digital root of 19 × 78 =
  33. 33.Digital root of 63954 =
  34. 34.Digital root of 15 × 26 =
  35. 35.Digital root of 64 × 30 =
  36. 36.Digital root of 72259 =
  37. 37.Digital root of 19683 =
  38. 38.Digital root of 13490 =
  39. 39.Digital root of 39 × 43 =
  40. 40.Digital root of 62 × 18 =

Answer key

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

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