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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 699 · 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 8921 =
  2. 2.Digital root of 40518 =
  3. 3.Digital root of 62232 =
  4. 4.Digital root of 22 × 90 =
  5. 5.Digital root of 28221 =
  6. 6.Digital root of 30592 =
  7. 7.Digital root of 37 × 48 =
  8. 8.Digital root of 37447 =
  9. 9.Digital root of 3506 =
  10. 10.Digital root of 65413 =
  11. 11.Digital root of 43945 =
  12. 12.Digital root of 59342 =
  13. 13.Digital root of 7750 =
  14. 14.Digital root of 66 × 33 =
  15. 15.Digital root of 91 × 74 =
  16. 16.Digital root of 1724 =
  17. 17.Digital root of 71 × 55 =
  18. 18.Digital root of 94 × 44 =
  19. 19.Digital root of 96493 =
  20. 20.Digital root of 18978 =
  21. 21.Digital root of 62 × 87 =
  22. 22.Digital root of 58738 =
  23. 23.Digital root of 78 × 42 =
  24. 24.Digital root of 91722 =
  25. 25.Digital root of 82006 =
  26. 26.Digital root of 64170 =
  27. 27.Digital root of 99871 =
  28. 28.Digital root of 64341 =
  29. 29.Digital root of 88388 =
  30. 30.Digital root of 44792 =
  31. 31.Digital root of 76738 =
  32. 32.Digital root of 2705 =
  33. 33.Digital root of 58 × 30 =
  34. 34.Digital root of 91 × 98 =
  35. 35.Digital root of 47 × 16 =
  36. 36.Digital root of 59219 =
  37. 37.Digital root of 96574 =
  38. 38.Digital root of 96762 =
  39. 39.Digital root of 22 × 27 =
  40. 40.Digital root of 21542 =

Answer key

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

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