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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 973 · 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 50 × 47 =
  2. 2.Digital root of 94 × 49 =
  3. 3.Digital root of 58071 =
  4. 4.Digital root of 96696 =
  5. 5.Digital root of 31 × 74 =
  6. 6.Digital root of 57 × 71 =
  7. 7.Digital root of 64135 =
  8. 8.Digital root of 27 × 14 =
  9. 9.Digital root of 15 × 79 =
  10. 10.Digital root of 79077 =
  11. 11.Digital root of 81510 =
  12. 12.Digital root of 53142 =
  13. 13.Digital root of 40 × 14 =
  14. 14.Digital root of 75733 =
  15. 15.Digital root of 49 × 20 =
  16. 16.Digital root of 59056 =
  17. 17.Digital root of 90906 =
  18. 18.Digital root of 65 × 55 =
  19. 19.Digital root of 17 × 89 =
  20. 20.Digital root of 28520 =
  21. 21.Digital root of 12693 =
  22. 22.Digital root of 13653 =
  23. 23.Digital root of 29772 =
  24. 24.Digital root of 22004 =
  25. 25.Digital root of 79628 =
  26. 26.Digital root of 51 × 65 =
  27. 27.Digital root of 99 × 79 =
  28. 28.Digital root of 99 × 74 =
  29. 29.Digital root of 44 × 55 =
  30. 30.Digital root of 56 × 45 =
  31. 31.Digital root of 41051 =
  32. 32.Digital root of 32638 =
  33. 33.Digital root of 85258 =
  34. 34.Digital root of 51 × 66 =
  35. 35.Digital root of 43045 =
  36. 36.Digital root of 53012 =
  37. 37.Digital root of 2296 =
  38. 38.Digital root of 74102 =
  39. 39.Digital root of 68 × 41 =
  40. 40.Digital root of 99 × 32 =

Answer key

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

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