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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 656 · 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 17 × 63 =
  2. 2.Digital root of 18562 =
  3. 3.Digital root of 26933 =
  4. 4.Digital root of 98899 =
  5. 5.Digital root of 85489 =
  6. 6.Digital root of 69 × 90 =
  7. 7.Digital root of 83079 =
  8. 8.Digital root of 66 × 97 =
  9. 9.Digital root of 58284 =
  10. 10.Digital root of 92 × 89 =
  11. 11.Digital root of 77 × 49 =
  12. 12.Digital root of 38 × 36 =
  13. 13.Digital root of 64698 =
  14. 14.Digital root of 18 × 41 =
  15. 15.Digital root of 93115 =
  16. 16.Digital root of 85 × 78 =
  17. 17.Digital root of 14751 =
  18. 18.Digital root of 96093 =
  19. 19.Digital root of 8189 =
  20. 20.Digital root of 18 × 99 =
  21. 21.Digital root of 92 × 42 =
  22. 22.Digital root of 95201 =
  23. 23.Digital root of 60 × 14 =
  24. 24.Digital root of 12 × 24 =
  25. 25.Digital root of 58 × 16 =
  26. 26.Digital root of 31 × 17 =
  27. 27.Digital root of 57 × 93 =
  28. 28.Digital root of 52000 =
  29. 29.Digital root of 39 × 30 =
  30. 30.Digital root of 58 × 27 =
  31. 31.Digital root of 98 × 47 =
  32. 32.Digital root of 23 × 19 =
  33. 33.Digital root of 60 × 45 =
  34. 34.Digital root of 90743 =
  35. 35.Digital root of 79 × 58 =
  36. 36.Digital root of 45 × 95 =
  37. 37.Digital root of 22940 =
  38. 38.Digital root of 42063 =
  39. 39.Digital root of 43581 =
  40. 40.Digital root of 35493 =

Answer key

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

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