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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 418 · 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 39 × 29 =
  2. 2.Digital root of 82 × 18 =
  3. 3.Digital root of 59 × 23 =
  4. 4.Digital root of 22 × 42 =
  5. 5.Digital root of 89946 =
  6. 6.Digital root of 17 × 92 =
  7. 7.Digital root of 62 × 25 =
  8. 8.Digital root of 90476 =
  9. 9.Digital root of 3775 =
  10. 10.Digital root of 18638 =
  11. 11.Digital root of 75355 =
  12. 12.Digital root of 69 × 13 =
  13. 13.Digital root of 21267 =
  14. 14.Digital root of 92341 =
  15. 15.Digital root of 89590 =
  16. 16.Digital root of 44 × 67 =
  17. 17.Digital root of 31 × 22 =
  18. 18.Digital root of 8693 =
  19. 19.Digital root of 92701 =
  20. 20.Digital root of 59545 =
  21. 21.Digital root of 74 × 85 =
  22. 22.Digital root of 15505 =
  23. 23.Digital root of 63005 =
  24. 24.Digital root of 38 × 47 =
  25. 25.Digital root of 31211 =
  26. 26.Digital root of 29343 =
  27. 27.Digital root of 55 × 14 =
  28. 28.Digital root of 38933 =
  29. 29.Digital root of 36790 =
  30. 30.Digital root of 38079 =
  31. 31.Digital root of 53369 =
  32. 32.Digital root of 34 × 81 =
  33. 33.Digital root of 9330 =
  34. 34.Digital root of 58 × 89 =
  35. 35.Digital root of 45 × 19 =
  36. 36.Digital root of 82688 =
  37. 37.Digital root of 75408 =
  38. 38.Digital root of 51 × 12 =
  39. 39.Digital root of 78 × 86 =
  40. 40.Digital root of 46065 =

Answer key

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

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