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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 347 · 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 80 × 25 =
  2. 2.Digital root of 26426 =
  3. 3.Digital root of 52542 =
  4. 4.Digital root of 46 × 64 =
  5. 5.Digital root of 15 × 24 =
  6. 6.Digital root of 53 × 73 =
  7. 7.Digital root of 30 × 72 =
  8. 8.Digital root of 5260 =
  9. 9.Digital root of 37455 =
  10. 10.Digital root of 67 × 44 =
  11. 11.Digital root of 86864 =
  12. 12.Digital root of 74 × 28 =
  13. 13.Digital root of 96295 =
  14. 14.Digital root of 76300 =
  15. 15.Digital root of 17 × 40 =
  16. 16.Digital root of 97 × 55 =
  17. 17.Digital root of 63 × 14 =
  18. 18.Digital root of 10708 =
  19. 19.Digital root of 66 × 29 =
  20. 20.Digital root of 71050 =
  21. 21.Digital root of 20308 =
  22. 22.Digital root of 6192 =
  23. 23.Digital root of 31 × 86 =
  24. 24.Digital root of 19 × 77 =
  25. 25.Digital root of 23108 =
  26. 26.Digital root of 21121 =
  27. 27.Digital root of 48909 =
  28. 28.Digital root of 40205 =
  29. 29.Digital root of 82 × 43 =
  30. 30.Digital root of 6117 =
  31. 31.Digital root of 31 × 36 =
  32. 32.Digital root of 36 × 74 =
  33. 33.Digital root of 66215 =
  34. 34.Digital root of 33392 =
  35. 35.Digital root of 35255 =
  36. 36.Digital root of 26978 =
  37. 37.Digital root of 92054 =
  38. 38.Digital root of 90504 =
  39. 39.Digital root of 94 × 31 =
  40. 40.Digital root of 60 × 35 =

Answer key

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

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