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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 788 · 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 19 × 67 =
  2. 2.Digital root of 89593 =
  3. 3.Digital root of 69 × 73 =
  4. 4.Digital root of 45704 =
  5. 5.Digital root of 85114 =
  6. 6.Digital root of 15 × 76 =
  7. 7.Digital root of 89 × 76 =
  8. 8.Digital root of 34 × 24 =
  9. 9.Digital root of 99111 =
  10. 10.Digital root of 94 × 65 =
  11. 11.Digital root of 49 × 29 =
  12. 12.Digital root of 81825 =
  13. 13.Digital root of 5662 =
  14. 14.Digital root of 17159 =
  15. 15.Digital root of 76795 =
  16. 16.Digital root of 44084 =
  17. 17.Digital root of 62 × 71 =
  18. 18.Digital root of 27 × 51 =
  19. 19.Digital root of 84 × 43 =
  20. 20.Digital root of 33 × 19 =
  21. 21.Digital root of 7933 =
  22. 22.Digital root of 20 × 25 =
  23. 23.Digital root of 84 × 93 =
  24. 24.Digital root of 51 × 67 =
  25. 25.Digital root of 77235 =
  26. 26.Digital root of 81176 =
  27. 27.Digital root of 34 × 17 =
  28. 28.Digital root of 15 × 87 =
  29. 29.Digital root of 91 × 23 =
  30. 30.Digital root of 19459 =
  31. 31.Digital root of 70 × 54 =
  32. 32.Digital root of 64940 =
  33. 33.Digital root of 67785 =
  34. 34.Digital root of 45906 =
  35. 35.Digital root of 25 × 97 =
  36. 36.Digital root of 80 × 98 =
  37. 37.Digital root of 52186 =
  38. 38.Digital root of 43555 =
  39. 39.Digital root of 93774 =
  40. 40.Digital root of 22 × 15 =

Answer key

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

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