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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 879 · 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 45384 =
  2. 2.Digital root of 83589 =
  3. 3.Digital root of 59 × 61 =
  4. 4.Digital root of 63 × 74 =
  5. 5.Digital root of 62 × 99 =
  6. 6.Digital root of 35 × 90 =
  7. 7.Digital root of 88771 =
  8. 8.Digital root of 37645 =
  9. 9.Digital root of 21 × 53 =
  10. 10.Digital root of 68594 =
  11. 11.Digital root of 56843 =
  12. 12.Digital root of 85930 =
  13. 13.Digital root of 97251 =
  14. 14.Digital root of 30 × 15 =
  15. 15.Digital root of 62 × 93 =
  16. 16.Digital root of 44 × 71 =
  17. 17.Digital root of 67515 =
  18. 18.Digital root of 28 × 44 =
  19. 19.Digital root of 95499 =
  20. 20.Digital root of 23 × 88 =
  21. 21.Digital root of 80865 =
  22. 22.Digital root of 23931 =
  23. 23.Digital root of 80591 =
  24. 24.Digital root of 75 × 54 =
  25. 25.Digital root of 73 × 28 =
  26. 26.Digital root of 55407 =
  27. 27.Digital root of 96 × 24 =
  28. 28.Digital root of 54 × 31 =
  29. 29.Digital root of 17 × 41 =
  30. 30.Digital root of 46703 =
  31. 31.Digital root of 73 × 18 =
  32. 32.Digital root of 35145 =
  33. 33.Digital root of 33 × 77 =
  34. 34.Digital root of 16647 =
  35. 35.Digital root of 89 × 92 =
  36. 36.Digital root of 94 × 37 =
  37. 37.Digital root of 27 × 88 =
  38. 38.Digital root of 33 × 23 =
  39. 39.Digital root of 73 × 13 =
  40. 40.Digital root of 54855 =

Answer key

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

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