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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 640 · 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 16 × 92 =
  2. 2.Digital root of 1903 =
  3. 3.Digital root of 32193 =
  4. 4.Digital root of 2856 =
  5. 5.Digital root of 31951 =
  6. 6.Digital root of 51 × 36 =
  7. 7.Digital root of 27038 =
  8. 8.Digital root of 75 × 59 =
  9. 9.Digital root of 18 × 26 =
  10. 10.Digital root of 58 × 45 =
  11. 11.Digital root of 52 × 66 =
  12. 12.Digital root of 79 × 77 =
  13. 13.Digital root of 59547 =
  14. 14.Digital root of 93314 =
  15. 15.Digital root of 20837 =
  16. 16.Digital root of 83 × 76 =
  17. 17.Digital root of 19756 =
  18. 18.Digital root of 5950 =
  19. 19.Digital root of 64419 =
  20. 20.Digital root of 83808 =
  21. 21.Digital root of 79673 =
  22. 22.Digital root of 58 × 34 =
  23. 23.Digital root of 16956 =
  24. 24.Digital root of 86 × 12 =
  25. 25.Digital root of 26890 =
  26. 26.Digital root of 41 × 51 =
  27. 27.Digital root of 58038 =
  28. 28.Digital root of 10013 =
  29. 29.Digital root of 25697 =
  30. 30.Digital root of 35 × 42 =
  31. 31.Digital root of 71718 =
  32. 32.Digital root of 27 × 12 =
  33. 33.Digital root of 17 × 26 =
  34. 34.Digital root of 82 × 97 =
  35. 35.Digital root of 39812 =
  36. 36.Digital root of 12 × 72 =
  37. 37.Digital root of 98655 =
  38. 38.Digital root of 24250 =
  39. 39.Digital root of 99626 =
  40. 40.Digital root of 47950 =

Answer key

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

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