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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 202 · 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 23954 =
  2. 2.Digital root of 28885 =
  3. 3.Digital root of 63 × 93 =
  4. 4.Digital root of 14 × 92 =
  5. 5.Digital root of 92 × 25 =
  6. 6.Digital root of 49512 =
  7. 7.Digital root of 93318 =
  8. 8.Digital root of 99 × 35 =
  9. 9.Digital root of 39786 =
  10. 10.Digital root of 13 × 42 =
  11. 11.Digital root of 92 × 86 =
  12. 12.Digital root of 75 × 26 =
  13. 13.Digital root of 60720 =
  14. 14.Digital root of 98 × 50 =
  15. 15.Digital root of 13726 =
  16. 16.Digital root of 30 × 66 =
  17. 17.Digital root of 68910 =
  18. 18.Digital root of 19 × 58 =
  19. 19.Digital root of 39 × 23 =
  20. 20.Digital root of 18121 =
  21. 21.Digital root of 2401 =
  22. 22.Digital root of 53 × 43 =
  23. 23.Digital root of 2250 =
  24. 24.Digital root of 22 × 72 =
  25. 25.Digital root of 94218 =
  26. 26.Digital root of 82 × 29 =
  27. 27.Digital root of 46995 =
  28. 28.Digital root of 95400 =
  29. 29.Digital root of 46 × 43 =
  30. 30.Digital root of 26 × 88 =
  31. 31.Digital root of 79677 =
  32. 32.Digital root of 70951 =
  33. 33.Digital root of 16835 =
  34. 34.Digital root of 81832 =
  35. 35.Digital root of 52 × 20 =
  36. 36.Digital root of 25 × 18 =
  37. 37.Digital root of 7401 =
  38. 38.Digital root of 93065 =
  39. 39.Digital root of 48895 =
  40. 40.Digital root of 17214 =

Answer key

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

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