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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 399 · 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 76848 =
  2. 2.Digital root of 34 × 91 =
  3. 3.Digital root of 38663 =
  4. 4.Digital root of 79669 =
  5. 5.Digital root of 60072 =
  6. 6.Digital root of 28 × 76 =
  7. 7.Digital root of 68 × 40 =
  8. 8.Digital root of 92 × 23 =
  9. 9.Digital root of 83550 =
  10. 10.Digital root of 45 × 90 =
  11. 11.Digital root of 31 × 13 =
  12. 12.Digital root of 36398 =
  13. 13.Digital root of 86072 =
  14. 14.Digital root of 17046 =
  15. 15.Digital root of 16154 =
  16. 16.Digital root of 81 × 57 =
  17. 17.Digital root of 38 × 71 =
  18. 18.Digital root of 26636 =
  19. 19.Digital root of 46900 =
  20. 20.Digital root of 17 × 63 =
  21. 21.Digital root of 19 × 40 =
  22. 22.Digital root of 32 × 58 =
  23. 23.Digital root of 66 × 87 =
  24. 24.Digital root of 26512 =
  25. 25.Digital root of 19924 =
  26. 26.Digital root of 41 × 17 =
  27. 27.Digital root of 76881 =
  28. 28.Digital root of 69967 =
  29. 29.Digital root of 55 × 51 =
  30. 30.Digital root of 86 × 25 =
  31. 31.Digital root of 13 × 31 =
  32. 32.Digital root of 74388 =
  33. 33.Digital root of 97553 =
  34. 34.Digital root of 44936 =
  35. 35.Digital root of 67868 =
  36. 36.Digital root of 54 × 71 =
  37. 37.Digital root of 66 × 83 =
  38. 38.Digital root of 73 × 32 =
  39. 39.Digital root of 26754 =
  40. 40.Digital root of 7355 =

Answer key

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

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