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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 705 · 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 58587 =
  2. 2.Digital root of 13679 =
  3. 3.Digital root of 70 × 73 =
  4. 4.Digital root of 4957 =
  5. 5.Digital root of 77636 =
  6. 6.Digital root of 33 × 36 =
  7. 7.Digital root of 21 × 87 =
  8. 8.Digital root of 59892 =
  9. 9.Digital root of 89 × 90 =
  10. 10.Digital root of 53 × 58 =
  11. 11.Digital root of 12654 =
  12. 12.Digital root of 28 × 63 =
  13. 13.Digital root of 79 × 93 =
  14. 14.Digital root of 99 × 31 =
  15. 15.Digital root of 67878 =
  16. 16.Digital root of 73 × 66 =
  17. 17.Digital root of 40237 =
  18. 18.Digital root of 16613 =
  19. 19.Digital root of 38 × 31 =
  20. 20.Digital root of 27906 =
  21. 21.Digital root of 13 × 97 =
  22. 22.Digital root of 84 × 14 =
  23. 23.Digital root of 31 × 83 =
  24. 24.Digital root of 766 =
  25. 25.Digital root of 32 × 91 =
  26. 26.Digital root of 13847 =
  27. 27.Digital root of 82281 =
  28. 28.Digital root of 22 × 16 =
  29. 29.Digital root of 55570 =
  30. 30.Digital root of 37 × 68 =
  31. 31.Digital root of 97 × 24 =
  32. 32.Digital root of 67 × 25 =
  33. 33.Digital root of 98 × 79 =
  34. 34.Digital root of 93 × 77 =
  35. 35.Digital root of 39293 =
  36. 36.Digital root of 94 × 34 =
  37. 37.Digital root of 99805 =
  38. 38.Digital root of 48 × 84 =
  39. 39.Digital root of 80165 =
  40. 40.Digital root of 76216 =

Answer key

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

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