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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 157 · 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 97 × 15 =
  2. 2.Digital root of 92608 =
  3. 3.Digital root of 84875 =
  4. 4.Digital root of 29687 =
  5. 5.Digital root of 22830 =
  6. 6.Digital root of 28 × 69 =
  7. 7.Digital root of 12823 =
  8. 8.Digital root of 94580 =
  9. 9.Digital root of 11008 =
  10. 10.Digital root of 22735 =
  11. 11.Digital root of 44 × 32 =
  12. 12.Digital root of 14 × 39 =
  13. 13.Digital root of 32165 =
  14. 14.Digital root of 34638 =
  15. 15.Digital root of 5082 =
  16. 16.Digital root of 3593 =
  17. 17.Digital root of 22 × 88 =
  18. 18.Digital root of 96341 =
  19. 19.Digital root of 83 × 85 =
  20. 20.Digital root of 77 × 37 =
  21. 21.Digital root of 4455 =
  22. 22.Digital root of 31693 =
  23. 23.Digital root of 97257 =
  24. 24.Digital root of 79469 =
  25. 25.Digital root of 54122 =
  26. 26.Digital root of 47 × 43 =
  27. 27.Digital root of 17 × 19 =
  28. 28.Digital root of 49 × 68 =
  29. 29.Digital root of 36697 =
  30. 30.Digital root of 27774 =
  31. 31.Digital root of 18 × 50 =
  32. 32.Digital root of 19191 =
  33. 33.Digital root of 96095 =
  34. 34.Digital root of 68 × 58 =
  35. 35.Digital root of 89706 =
  36. 36.Digital root of 60711 =
  37. 37.Digital root of 79090 =
  38. 38.Digital root of 34308 =
  39. 39.Digital root of 48 × 98 =
  40. 40.Digital root of 67991 =

Answer key

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

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