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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 840 · 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 33801 =
  2. 2.Digital root of 90579 =
  3. 3.Digital root of 61625 =
  4. 4.Digital root of 16 × 38 =
  5. 5.Digital root of 94746 =
  6. 6.Digital root of 43 × 19 =
  7. 7.Digital root of 78 × 22 =
  8. 8.Digital root of 269 =
  9. 9.Digital root of 31201 =
  10. 10.Digital root of 80697 =
  11. 11.Digital root of 28193 =
  12. 12.Digital root of 13 × 23 =
  13. 13.Digital root of 97264 =
  14. 14.Digital root of 72 × 97 =
  15. 15.Digital root of 4511 =
  16. 16.Digital root of 86 × 84 =
  17. 17.Digital root of 47432 =
  18. 18.Digital root of 38 × 61 =
  19. 19.Digital root of 29148 =
  20. 20.Digital root of 21 × 19 =
  21. 21.Digital root of 95 × 83 =
  22. 22.Digital root of 45 × 27 =
  23. 23.Digital root of 79 × 99 =
  24. 24.Digital root of 90 × 13 =
  25. 25.Digital root of 82723 =
  26. 26.Digital root of 1560 =
  27. 27.Digital root of 47324 =
  28. 28.Digital root of 18 × 93 =
  29. 29.Digital root of 99379 =
  30. 30.Digital root of 20005 =
  31. 31.Digital root of 99203 =
  32. 32.Digital root of 57 × 66 =
  33. 33.Digital root of 98502 =
  34. 34.Digital root of 54 × 28 =
  35. 35.Digital root of 91 × 76 =
  36. 36.Digital root of 4674 =
  37. 37.Digital root of 19837 =
  38. 38.Digital root of 30 × 29 =
  39. 39.Digital root of 42 × 85 =
  40. 40.Digital root of 46 × 53 =

Answer key

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

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