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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 63 · 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 16335 =
  2. 2.Digital root of 55709 =
  3. 3.Digital root of 19901 =
  4. 4.Digital root of 39283 =
  5. 5.Digital root of 65687 =
  6. 6.Digital root of 91887 =
  7. 7.Digital root of 90 × 79 =
  8. 8.Digital root of 64341 =
  9. 9.Digital root of 31189 =
  10. 10.Digital root of 94 × 85 =
  11. 11.Digital root of 38848 =
  12. 12.Digital root of 17750 =
  13. 13.Digital root of 95060 =
  14. 14.Digital root of 90531 =
  15. 15.Digital root of 24672 =
  16. 16.Digital root of 56 × 19 =
  17. 17.Digital root of 91 × 89 =
  18. 18.Digital root of 15 × 45 =
  19. 19.Digital root of 90855 =
  20. 20.Digital root of 79246 =
  21. 21.Digital root of 12135 =
  22. 22.Digital root of 32 × 55 =
  23. 23.Digital root of 83 × 77 =
  24. 24.Digital root of 28279 =
  25. 25.Digital root of 78 × 60 =
  26. 26.Digital root of 73 × 23 =
  27. 27.Digital root of 46841 =
  28. 28.Digital root of 76671 =
  29. 29.Digital root of 40 × 85 =
  30. 30.Digital root of 39484 =
  31. 31.Digital root of 64 × 98 =
  32. 32.Digital root of 46 × 28 =
  33. 33.Digital root of 49 × 18 =
  34. 34.Digital root of 87580 =
  35. 35.Digital root of 9475 =
  36. 36.Digital root of 15 × 80 =
  37. 37.Digital root of 12 × 51 =
  38. 38.Digital root of 76 × 87 =
  39. 39.Digital root of 69957 =
  40. 40.Digital root of 78771 =

Answer key

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

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